On this page

Text Messaging (SMS)

10 Best SMS APIs (SMS Gateways) in the US for Developers to Help Businesses Send Messages to Customers in 2024

Published by
Sriranjani Aravindan
November 8, 2023

According to ‘The State of Customer Engagement Report 2022’ conducted by Twilio, a leading cloud communications platform, businesses that integrate SMS APIs into their customer engagement strategies experience an average response rate of 45%. As a developer, you understand the importance of delivering timely and personalized messages to engage and inform your target audience. In today's fast-paced world, SMS remains a popular and reliable channel for businesses to reach their customers instantly. With the right text message API, you can streamline your messaging processes, enhance customer experiences, and drive business growth.

In this blog, we have carefully curated a list of the top SMS APIs that empower developers like you to integrate robust messaging capabilities into your applications effortlessly. These APIs offer a wide range of features, including sending SMS messages, managing contacts, scheduling campaigns, and tracking delivery statuses. By leveraging these powerful tools, you can seamlessly connect with your customers, and send notifications, promotional offers, alerts, and more, all while ensuring the highest levels of reliability, security, and scalability.

Whether you are building a mobile app, a customer support system, or a marketing automation platform, choosing the right SMS Gateway API service is crucial for your project's success. Join us as we explore the ten best SMS APIs available to send text messages for businesses in 2024, equipping you with the knowledge and insights you need to make informed decisions. Let's dive in and discover the APIs that will empower you to deliver impactful messages to your customers, fueling engagement and driving your business forward.

What Is an SMS API? 

A gateway for text message communication between various apps, websites, or software programs is established using an SMS API, which is a collection of software protocols. These APIs offer prewritten code and API documentation, allowing applications with various transmission methods to share data. SMS APIs may be thought of as the "middle man" that enables the secure transfer of digital data between applications and web servers, obviating the necessity for labor-intensive coding or the reconstruction of current programs.

Text message APIs provide protocols that allow text messaging between various devices. For instance, SMS messaging between mobile phones and apps via the Internet is made possible through the Short Message Peer-to-Peer (SMPP) protocol. You can run into words like "SDKs" (Software Development Kit) and "REST APIs" (Representational State Transfer) while looking at SMS Gateways. Comprehensive developer tools, such as code libraries, testing tools, and debuggers that support APIs, are provided through SDKs. On the other hand, REST APIs are safe and unaffected by past or present behavior.

Communication Platform as a Service (CPaaS) companies offer the essential platform and code integration for their text message APIs so that you may use SMS functionality inside your current application. One-on-one and group texting, mass texting, SMS marketing sequences with rich media, automatic reminders, appointment notifications, and virtual discount codes/sale alerts are all made possible by this connection.

How Does a Text Message API Work?

SMS APIs link to an SMS gateway to enable communication between apps, websites, or software applications. 

Authentication: To use an SMS API, developers must include it in the coding of their application. This entails integrating the required SDKs, REST APIs, or libraries offered by the SMS service provider. Once linked, developers must provide credentials, such as API keys or access tokens, to the text message API in order to authenticate their application. Access to the SMS gateway is safe and authorized thanks to this authentication method.

Sending and Receiving Messages: Using the text messaging API's methods and functions to send and receive text messages is possible when developers have integrated and authenticated the API. Developers create a request using the parameters given by the API, such as the recipient's phone number and the message content, to send an SMS.

The SMS gateway then receives this request via the API and handles sending the message to the designated recipient. Similar to how inbound messages are accepted by the SMS gateway, developers may access and handle these messages within their applications using the API.

Integration and Extra Features: SMS APIs frequently provide extra features to improve messaging capabilities. These capabilities may include message delivery tracking, maintaining contact lists, scheduling messages for future delivery, and integrating two-way communication via shortcodes or keywords.

These capabilities may be used by developers to give users of their customer messaging platforms, more engaging and tailored message experiences. In order to improve workflows and automate messaging procedures, SMS API Gateways can also be coupled with other platforms or services, such as CRM systems or marketing automation tools.

Top 10 SMS API Gateway Providers in the US for Developers in 2024

Below listed are the top 10 SMS API gateway providers for developers in the US in 2024.

1. App0


App0 is an innovative, no-code, AI-powered messaging platform that helps businesses to automate custom communication. With App0, you can build SMS APIs and conversational AI agents seamlessly. It helps businesses from various niches to streamline customer communication and supercharge their SMS marketing strategy. 

What sets App0 apart from other SMS API platforms is its seamless fusion of conversational AI and text-based messaging, offering data-driven insights, lightning-fast No-Code solutions, and top-tier security and compliance. Using AI, it transforms notifications into meaningful two-way conversations, making customer experiences exceptional.

Request a Demo today to learn more about full-service messaging that can help in revenue generation and delightful customer experience.


  • Customer interaction journeys using no-code: Craft intricate, multi-party interaction workflows effortlessly with App0's no-code/low-code flow builder.
  • Data and AI: Leverage first-party customer interaction and behavioural data to enhance engagement.
  • Simple and conversational client experiences: Choose from ready-made user-facing applications for appointments, payments, and marketing, or craft your own using App0's EasyApp studio for tailored interactions.
  • Integrations: Accelerate your go-to-market strategy with prebuilt industry-specific integrations, ensuring swift implementation of your use cases.
  • Enterprise-grade security: App0 offers adaptive authentication, providing a passwordless user experience while maintaining robust, enterprise-level security.
  • Compliance: App0 is designed to adhere to various national and local regulations, ensuring comprehensive compliance for your operations.
sms apis_app0
Power Customer Communication Using AI

Customer experience for banking, financial services, fintech, retail & E-Commerce powered by AI messaging. Schedule a demo to learn how AI can revolutionise customer engagement.

Explore App0

2. Twilio SMS API

best SMS APIs_Twilio

Twilio SMS API is a powerful and reliable cloud communication solution that enables businesses to seamlessly integrate SMS capabilities into their applications. The Twilio SMS Gateway API is considered as one of the best text message API providers that gives programmers the tools they need to create scalable and customized messaging experiences for their clients. These capabilities include message sending, delivery tracking, and contact management.

Twilio's API, which is trusted by companies of all sizes, guarantees safe and compliant message transmission while also offering excellent deliverability rates. Twilio SMS API delivers a simple integration experience with its user-friendly documentation and abundant developer tools, enabling organizations to take advantage of SMS messaging's unrivaled reach and engagement.


  • Sending SMS messages
  • Receiving SMS messages
  • Managing phone numbers
  • Tracking delivery status
  • Implementing two-factor authentication
  • Setting up message queues
  • Configuring webhooks
  • Enabling message templates
  • Integrating media attachments

Notable Customers

InstaCart, Delta, Morgan Stanley, 1800 Flowers


twilio pricing_text message api

 The pricing for Twilio SMS API can vary depending on factors such as the country you are sending messages to, the volume of messages, and any additional features or services you require. Twilio offers a flexible pricing structure based on usage.

  • Outbound SMS messages in the United States are priced at $0.0075 per message.
  • Inbound SMS messages in the United States are free of charge.
  • Twilio charges additional fees for services such as shortcodes, phone numbers, and messaging services.
  • Shortcodes, which are shorter phone numbers used for sending messages, have varying costs depending on the type and usage.
  • Phone numbers for SMS messaging are priced at $1.00 per month.
  • Additional features, such as delivery status tracking and message queues, may have associated costs.


  • Reliability: Twilio SMS API offers a highly reliable messaging infrastructure, ensuring that your SMS messages are delivered promptly and consistently to your recipients. Twilio's robust network and global reach minimize the risk of message delivery failures, enabling you to maintain effective communication with your customers.
  • Scalability: Twilio SMS API Gateway is designed to handle high volumes of messaging traffic, making it ideal for businesses with varying message-sending needs. Whether you need to send a few messages or millions of messages, Twilio's infrastructure can scale seamlessly to accommodate your requirements, ensuring smooth and uninterrupted message delivery.
  • Flexibility and Customization: Twilio SMS Gateway API provides developers with extensive customization options, allowing you to tailor your messaging experience to meet your specific business needs. You can easily integrate Twilio's API into your existing applications and systems, leveraging its flexible features and capabilities to create personalized messaging workflows and deliver a seamless user experience to your customers.


  • Cost for international messaging: While Twilio offers competitive pricing for SMS messages, sending messages internationally can incur higher costs compared to domestic messages. The pricing for international messaging varies depending on the country and may impact your overall expenses if you frequently communicate with customers or contacts outside your home country.
  • Learning curve for complex integrations: Integrating and utilizing Twilio SMS API for more complex functionalities or advanced use cases may require a learning curve. Twilio provides comprehensive documentation and resources to assist developers, but integrating complex features like two-way messaging, media messaging, or implementing advanced messaging workflows may require additional time and effort to fully understand and implement.
#1 Twilio Alternative for SMS APIs

Looking for a better alternative to Twilio for SMS APIs in E-commerce? Choose App0 today to skyrocket your text messaging using AI, data and no-code workflow automation.

See a demo

3. MessageBird SMS API

best SMS APIs_Messagebird

MessageBird is a global cloud communications platform that offers a powerful SMS API, enabling businesses to seamlessly integrate text messaging capabilities into their applications and services. With a user-friendly interface and extensive documentation, developers can quickly implement MessageBird's text message API to send personalized messages, notifications, and alerts to their customers worldwide.

MessageBird's robust infrastructure and extensive global coverage make it a trusted choice for businesses looking to enhance customer engagement through SMS communication.


  • Send SMS messages globally
  • Two-way messaging
  • Message Scheduling
  • Message templates
  • Delivery tracking and status updates
  • Detailed analytics and reporting
  • Number Verification
  • Concatenated messages for long texts
  • Unicode and emoji support
  • Integration with popular programming languages and frameworks
  • Webhooks for real-time notifications
  • Scalable infrastructure for high-volume messaging
  • Support for multiple channels (SMS, Voice, WhatsApp, etc.)
  • Compliance with industry regulations and data privacy standards

Notable Customers

Uber, Delivery Hero, SAP, Hello Fresh, Revolut


messagebird pricing_text message api

Pricing Models: MessageBird offers two pricing models for SMS API usage - "Pay as You Go" and "Volume Discount."

  • Pay as You Go: With the "Pay as You Go" model, you pay for the number of messages sent. The pricing varies based on the destination country and the type of message (local, international, or network-specific). You can check the specific rates for each country on MessageBird's pricing page.
  • Volume Discount: MessageBird also offers volume discounts for customers who have higher message volumes. The discount percentage increases as the message volume increases, offering cost savings for businesses with higher messaging needs. The volume discount pricing is available upon request, and you can contact MessageBird's sales team for more information.
  • Additional Features: MessageBird's pricing page also mentions that additional features, such as Number Lookup and HLR Lookup, may incur separate charges. It is advisable to check the pricing details for these specific features on the pricing page or consult with MessageBird directly.


  • Global Reach: MessageBird's SMS API provides extensive global coverage, allowing businesses to reach customers around the world. With connections to over 900 mobile networks in more than 190 countries, you can reliably deliver SMS messages to a wide audience, regardless of their location. This global reach enables businesses to expand their customer base and engage with users in various markets.
  • Robust and Reliable Infrastructure: MessageBird boasts a highly reliable infrastructure, ensuring the delivery of your SMS messages. Their platform is built on carrier-grade infrastructure, leveraging direct connections with mobile operators to achieve high delivery rates and minimize message latency. By utilizing MessageBird's API, businesses can trust that their messages will be delivered promptly and reliably, enhancing the overall customer experience.
  • Feature-Rich Functionality: MessageBird's SMS API offers a range of powerful features and capabilities. With this API, you can send personalized messages, track delivery statuses, schedule messages for future delivery, and implement two-way messaging for interactive communication with customers. Additionally, MessageBird's API supports Unicode, enabling the sending of messages in different languages and character sets. These features empower businesses to create tailored and engaging SMS campaigns, resulting in improved customer engagement and higher conversion rates.


  • Limited Message Customization: MessageBird's SMS API provides basic functionality for sending text messages, but some users have noted limitations in terms of message customization and personalization options. If your business requires highly customized or dynamic messaging content, you may find the API's capabilities somewhat restrictive.
  • Support Limitations: While MessageBird provides documentation and resources for developers, some users have reported challenges in receiving timely and comprehensive support when encountering issues or needing assistance. The availability and responsiveness of customer support can vary, and this could impact your experience when integrating and using the SMS API.

4. Telesign SMS API

SMS APIs_Telesign

Telesign is a leading provider of conversational SMS and communication solutions, offering a robust SMS API that enables businesses to deliver secure and reliable messages to their customers worldwide. With TeleSign's SMS API, businesses can enhance their customer engagement strategies by sending time-sensitive alerts, notifications, and authentication codes. The API provides seamless integration, allowing developers to quickly implement SMS capabilities into their applications.

TeleSign's SMS Gateway API also offers features like delivery tracking, real-time analytics, and global coverage, ensuring that messages are delivered efficiently and securely. With a strong focus on security and compliance, Telesign empowers businesses with a trusted SMS solution to reach their customers effectively.


  • SMS message sending and receiving
  • Two-way messaging capabilities
  • Global coverage for international messaging
  • Delivery status tracking
  • Opt-out management for compliance with regulations
  • Sender ID customization
  • Unicode support for sending non-Latin characters
  • Template messaging for standardized content
  • Real-time analytics and reporting
  • Secure authentication and verification services
  • Dedicated Short Codes
  • Developer Resources


  • Basic plan: $1.00 per month subscription with a credit limit of 1,000 per month (hard limit).
  • Pro plan: $10.00 per month subscription with a credit limit of 100,000 per month (hard limit).
  • Ultra plan: $50.00 per month subscription with a credit limit of 500,000 per month (hard limit).
  • Megaplan: $250.00 per month subscription with a credit limit of 2,500,000 per day (hard limit).

Notable Customers

Ubisoft, Fiverr, OfferUp, Salesforce


  • Global Reach: Telesign's SMS API offers extensive global coverage, allowing businesses to reach customers in virtually any country around the world. With connectivity to over 200 countries and territories, Telesign enables businesses to deliver SMS messages reliably and efficiently across borders.
  • Robust Security: Security is a top priority for Telesign, and their SMS API offers robust security features to protect sensitive information. Telesign implements industry-standard protocols and encryption methods, ensuring the confidentiality and integrity of SMS communications. This makes it an ideal choice for businesses that prioritize the privacy and security of their messaging operations.
  • Advanced Authentication: Telesign's SMS Gateway API provides powerful authentication capabilities, including two-factor authentication (2FA). By implementing 2FA, businesses can add an extra layer of security to their user authentication processes, mitigating the risk of unauthorized access and ensuring a more secure user experience. Telesign's authentication solutions are trusted by organizations globally, making it a reliable choice for businesses looking to enhance their authentication processes.


  • Cost: Telesign's SMS API pricing structure may be seen as a disadvantage for some users. The costs associated with using their API can be relatively higher compared to other SMS providers in the market. Depending on the volume of messages sent and specific requirements, the pricing model may not be as cost-effective for smaller businesses or those with limited budgets.
  • Limited Regional Coverage: Another potential drawback is that Telesign's SMS API coverage may not be as extensive in certain regions compared to other providers. While they have a global presence, the availability of their services may vary depending on the specific countries or regions that businesses are targeting. It is important to review Telesign's coverage map and confirm if their SMS services adequately cover the target audience before making a decision.

5. Vonage SMS API

SMS Gateways_Vonage SMS API

Vonage SMS API is a powerful messaging solution that enables businesses to seamlessly integrate SMS capabilities into their applications. With a robust set of features and developer-friendly documentation, Vonage SMS Gateway empowers businesses to send personalized messages, notifications, and alerts to their customers globally and is one of the best SMS API providers in the US.

Whether it's transactional messages, two-factor authentication, or promotional campaigns, Vonage SMS API offers reliable and scalable messaging capabilities. With its easy-to-use interface and extensive global reach, Vonage text messaging API provides businesses with the tools they need to engage customers effectively and enhance communication experiences.


  • Sending SMS messages globally
  • Two-way SMS communication
  • Delivery receipts and message status tracking
  • Personalized messaging and dynamic content
  • Unicode and multi-language support
  • Concatenated SMS for long messages
  • URL shortening and link tracking
  • SMS opt-in and opt-out management
  • Sender ID customization
  • Message scheduling and delayed delivery
  • Message templates and message storage
  • Delivery rate and performance analytics
  • Integration with popular programming languages and frameworks
  • Scalability and high message throughput
  • Developer-friendly documentation and support


Vonage Pricing_Top SMS API Gateways

Vonage offers a straightforward pay-as-you-go pricing model for SMS API usage. You only pay for the messages you send, with no upfront commitments or hidden charges.

  • Standard SMS (Local): $0.005 per message sent and received.
  • Standard SMS (International): Prices vary depending on the destination country. Refer to the Vonage pricing page for specific rates.
  • High-Volume Pricing: If you anticipate sending large volumes of SMS messages, contact Vonage to discuss custom pricing options.
  • Phone Number Rental: Rent a virtual long number for $1 per month.
  • Short Code Rental: Rent a dedicated short code for $1,000 per month.
  • Inbound Messages: Inbound messages are free of charge.
  • Additional Fees: Additional fees may apply for certain features such as SMS Concatenation or Unicode characters. Refer to the Vonage pricing page for detailed information.

Notable Customers

AirBnB, Shopee, Domino’s Pizza, Trivago


  • Reliable and Global Reach: Vonage SMS API offers a reliable messaging infrastructure with a vast global network of carriers, ensuring that your SMS messages reach customers wherever they are. This global reach allows businesses to effectively communicate with customers on a global scale, expanding their reach and customer engagement.
  • Developer-Friendly: Vonage text message API provides comprehensive documentation, code samples, and SDKs in multiple programming languages, making it easy for developers to integrate and customize. The developer-friendly approach allows for smooth implementation and seamless integration of SMS capabilities into applications, saving time and effort in the development process.
  • Feature-Rich and Scalable: Vonage text message API offers a wide range of features to enhance messaging capabilities, such as two-way messaging, delivery receipts, message templates, and intelligent routing. These features empower businesses to create personalized and interactive SMS experiences for their customers. Additionally, Vonage text message API is designed to scale, allowing businesses to handle large volumes of SMS messages efficiently and reliably as their messaging needs grow.


  • Pricing Structure: Some users have found the pricing structure of Vonage SMS API to be relatively higher compared to certain competitors in the market. While Vonage provides transparent pricing details, including message rates for different countries, the overall cost of sending SMS messages can add up depending on the volume of messages and destination countries. It's important to evaluate the pricing based on your specific requirements and compare it with other available options to ensure it aligns with your budget.
  • Limited Availability of Short Codes: Vonage SMS API may have limitations when it comes to obtaining dedicated short codes for specific regions or countries. Dedicated short codes provide a recognizable and consistent sender identity, but their availability can be restricted or subject to additional costs. If your business requires dedicated short codes for branding purposes or regulatory compliance, it's essential to check the availability and associated requirements with Vonage beforehand.

6. BirdEye SMS API

SMS Gateway APIs_Birdeye

BirdEye SMS API is a comprehensive messaging solution designed to help businesses effectively communicate with their customers. With BirdEye text message API, businesses can seamlessly integrate SMS capabilities into their applications, enabling them to send personalized messages, notifications, and updates. The API provides a user-friendly interface and robust features such as two-way messaging, message scheduling, and delivery tracking.

BirdEye text message API empowers businesses to enhance customer engagement, streamline communication processes, and deliver exceptional experiences. Whether it's sending appointment reminders, review requests, or promotional offers, BirdEye text message API offers a reliable and scalable solution for businesses to connect with their customers efficiently.


  • Sending SMS messages
  • Two-way messaging
  • Automated messaging
  • Personalization
  • Opt-in and opt-out management
  • Reporting and analytics
  • Integration capabilities
  • Global reach
  • Security and Compliance
  • Developer-friendly documentation and support


For a single location, Birdeye's price starts at $299 per month. The items you purchase and the number of sites you have affect the overall Birdeye cost.

  • Standard Plan for listings, reviews, and campaigns: $299 per month.
  • Professional Plan: $399 per month for interactions, campaigns, reviews, and listings.
  • Only offers custom quotations; the premium plan also offers surveys, ticketing, analytics, and benchmarking.

Notable Customers

PetSmart, 1-800-GOT-JUNK?, Anytime Fitness, Christian Brothers Automotive, Sport Clips


  • Seamless Communication: Birdeye SMS API provides businesses with a reliable and efficient communication channel to reach their customers. With features like two-way messaging and automated workflows, businesses can easily engage in interactive conversations and deliver timely information to their audience.
  • Personalized Messaging: One of the key advantages of Birdeye SMS Gateway is the ability to send personalized SMS messages. This allows businesses to tailor their communications based on customer preferences, demographics, or previous interactions, creating a more personalized and engaging experience for their customers.
  • Robust Integration Capabilities: Birdeye SMS API offers seamless integration with existing systems and applications, making it easy for businesses to incorporate SMS messaging into their workflows. This enables businesses to leverage their existing tools and infrastructure while enhancing their communication strategy with SMS capabilities.


  • Limited customizability: Some users have noted that Birdeye SMS API may have limitations when it comes to fully customizing the appearance and branding of SMS messages. This may restrict businesses looking for more extensive branding options to align with their brand identity.
  • Pricing structure: The pricing structure of Birdeye SMS API has been mentioned as a potential drawback by some users. Depending on the specific usage and volume requirements, businesses may find that the pricing can be higher compared to other SMS Gateway providers, especially for larger-scale messaging needs. It's important to carefully evaluate the cost implications before committing to the service.

7. ClickSend SMS API

ClickSend_SMS Gateway APIs

ClickSend SMS API is a comprehensive messaging solution that empowers businesses to seamlessly integrate SMS capabilities into their applications. With a user-friendly interface and robust features, ClickSend SMS API enables businesses to send personalized messages, notifications, and alerts to their customers worldwide. The API supports two-way messaging, allowing businesses to engage in interactive conversations with their audience.

With its reliable delivery, real-time reporting, and scalability, ClickSend provides one of the top text message APIs, that offers a seamless experience for businesses looking to optimize their communication strategies. Whether it's transactional messaging, marketing campaigns, or customer support, ClickSend SMS Gateway provides the tools and flexibility needed to enhance customer engagement and drive business growth.


  • Sending SMS messages
  • Two-way messaging
  • SMS templates
  • Personalization
  • Scheduled messaging
  • Bulk messaging
  • Delivery reports
  • Contact management
  • Shortcodes and keywords
  • Unicode support
  • SMS tracking and analytics


ClickSend SMS API pricing_text message api

ClickSend offers a flexible and scalable pricing structure for their SMS API, allowing businesses to choose the plan that suits their needs. 

  • Pay-as-you-go: Starts at $0.0065 per SMS message

Monthly Plans:

  • Starter: $25 per month for 500 credits
  • Basic: $40 per month for 1,000 credits
  • Bronze: $80 per month for 2,000 credits
  • Silver: $250 per month for 6,500 credits
  • Gold: $450 per month for 12,500 credits
  • Platinum: $800 per month for 25,000 credits
  • Enterprise: Custom pricing for higher volume needs

Notable Customers

Amazon, Uber, Coca-Cola, IBM, Microsoft


  • Robust Feature Set: ClickSend SMS API offers a comprehensive range of features that empower businesses to deliver personalized, timely, and engaging SMS messages. From two-way messaging and scheduled messages to delivery reports and bulk messaging capabilities, ClickSend provides the tools necessary for effective communication with customers.
  • Scalability and Reliability: ClickSend SMS API is designed to handle high volumes of messages, making it suitable for businesses of all sizes. With a reliable infrastructure and global reach, ClickSend ensures that messages are delivered promptly and consistently, regardless of the recipient's location.
  • User-Friendly Interface and Documentation: ClickSend provides a user-friendly interface that simplifies the integration process for developers. Additionally, their well-documented API resources and extensive support materials make it easier for businesses to implement the SMS Gateway into their applications smoothly.


  • Complexity for beginners: Some users have found ClickSend SMS API to have a steeper learning curve, particularly for developers who are new to working with APIs. The setup process and understanding the API documentation may require additional time and effort, making it less beginner-friendly compared to some other SMS API providers.
  • Cost for high-volume messaging: ClickSend SMS Gateway API may become relatively more expensive for businesses with high-volume messaging needs. As the number of messages sent increases, the costs can add up, potentially making it less cost-effective for organizations that regularly send a large volume of SMS messages.

8. TrueDialog SMS API

SMS API Service_TrueDialog

True Dialog SMS API is a powerful messaging solution that enables seamless communication between businesses and their customers. With its user-friendly interface and robust features, True Dialog SMS API allows businesses to integrate SMS capabilities into their existing systems and applications, facilitating efficient and personalized two-way conversations. Whether it's sending notifications, conducting surveys, or engaging in real-time customer support, True Dialog SMS Gateway empowers businesses to deliver targeted messages at scale, increasing customer engagement and satisfaction.

With its reliable infrastructure and comprehensive documentation, True Dialog text message API offers a reliable and flexible platform for businesses seeking to enhance their communication strategies and drive meaningful interactions with their audience.


  • Seamless integration with existing systems and applications
  • Two-way messaging capabilities
  • Bulk SMS Sending
  • Opt-In and Opt-Out Support
  • Personalized messaging for targeted communication
  • Notification sending functionality
  • Survey conducting capabilities
  • Real-time customer support engagement
  • Scalable messaging at any volume
  • Reliable infrastructure


TrueDialog pricing_text message api

True Dialog offers flexible pricing plans for their text message API services. While the exact pricing details may vary, here is a general overview of their pricing structure:

  • Pay-as-you-go: With this plan, you pay for the number of SMS messages you send. The pricing typically starts at around $0.01 per message, depending on the volume and destination.
  • Monthly subscriptions: True Dialog also offers monthly subscription plans that provide a fixed number of SMS messages per month. The pricing usually ranges from $20 to $500 per month, depending on the package and the included number of messages.
  • Custom enterprise plans: For larger businesses or organizations with high-volume messaging needs, True Dialog offers custom enterprise plans tailored to specific requirements. The pricing for these plans is typically negotiated directly with True Dialog based on factors such as message volume, additional features, and support levels.

Notable Customers

Walmart, Target, Macy's, Amazon


  • Robust and Feature-Rich: True Dialog's SMS API offers a wide range of features and functionalities that enable businesses to create and manage effective SMS communication strategies. From two-way messaging and bulk SMS sending to personalization and automation capabilities, the API provides a comprehensive toolkit for businesses to engage with their customers efficiently.
  • Scalability and Reliability: True Dialog's SMS Gateway is designed to handle high volumes of SMS messages, making it suitable for businesses of all sizes. The API ensures reliable message delivery, with features like delivery reports and error tracking, providing businesses with confidence that their messages reach the intended recipients in a timely manner.
  • Developer-Friendly and Documentation: True Dialog understands the importance of developer experience. Their API is well-documented, accompanied by SDKs and code samples that simplify the integration process for developers. This developer-friendly approach allows businesses to quickly and seamlessly integrate True Dialog's SMS API into their existing systems and applications, saving time and effort.


  • Cost: Depending on your messaging volume and specific needs, the pricing of True Dialog's SMS API may be higher compared to some other SMS service providers. It's important to carefully evaluate your budget and compare pricing structures to ensure they align with your business requirements.
  • Limited International Coverage: True Dialog's SMS Gateway may have limited coverage in certain international regions. If your business operates globally or targets customers in specific countries, it's essential to confirm that the API supports messaging to those regions. Lack of international coverage could restrict your ability to reach a wider audience.

9. Podium SMS API

SMS API-Podium

Podium SMS API is a cutting-edge communication platform that empowers businesses to seamlessly integrate SMS capabilities into their applications and systems. With its robust and developer-friendly API, Podium enables businesses to effortlessly send and receive text messages, automate customer interactions, and streamline their overall communication strategy. Offering a wide range of features and functionalities, including message scheduling, personalized templates, and real-time delivery status updates, Podium text message API is a versatile solution that caters to the unique communication needs of businesses across various industries.

Whether it's enhancing customer engagement, facilitating transactional notifications, or driving marketing campaigns, Podium SMS API provides a reliable and scalable infrastructure that ensures efficient and effective communication with customers.


  • Seamless integration of SMS capabilities into applications and systems
  • Sending and receiving text messages
  • Automation of customer interactions
  • Streamlining communication strategy
  • Message scheduling
  • Personalized templates
  • Real-time delivery status updates
  • Enhancing customer engagement
  • Facilitating transactional notifications
  • Driving marketing campaigns
  • Reliable and scalable infrastructure
  • International SMS Support


pricing_text message api

Podium offers different pricing plans tailored to meet the specific needs of businesses, including Starter, Team, Growth, and Enterprise plans.

  • The Starter plan is designed for small businesses and starts at $399 per month.
  • The Team plan, suitable for medium-sized businesses, has a starting price of $699 per month.
  • The Growth plan, aimed at larger businesses with more advanced requirements, offers customized pricing based on individual needs and business size.
  • For the Enterprise plan, which is ideal for large organizations with complex communication needs, pricing is available upon request.
  • Additional features and functionalities such as review management, messaging tools, webchat, and more may be available at different pricing tiers.
  • Podium offers a free demo and consultation to discuss specific business requirements and determine the best-suited pricing plan.

Notable Customers

Pura Vida Body & Mind Spa, Maus Family Automotive, LA Furniture


  • Seamless Integration: Podium SMS API offers a developer-friendly interface and comprehensive documentation, making it easy to integrate SMS capabilities into existing applications and systems. The API provides the necessary tools and resources to streamline the integration process, saving time and effort for developers.
  • Enhanced Customer Communication: With Podium SMS API, businesses can leverage the power of SMS messaging to improve customer communication. By sending personalized messages, scheduling automated notifications, and enabling two-way communication, companies can engage with their customers in a timely and efficient manner. This enhanced communication can lead to improved customer satisfaction and stronger relationships.
  • Versatile Features and Functionality: Podium text messaging API provides a wide range of features and functionality to meet diverse business needs. These may include message templates for consistent communication, message scheduling for timely delivery, real-time delivery status updates, and international SMS support for global reach. These versatile features enable businesses to tailor their SMS communication strategy and adapt it to their specific requirements.


  • Pricing: One potential downside of Podium SMS API is that it may not be cost-effective for businesses with limited budgets or low-volume SMS requirements. The pricing structure of Podium's services may be higher compared to some other SMS API providers, which could be a drawback for small businesses or startups with limited resources.
  • Limited Customization: Another potential limitation is the level of customization available with Podium SMS Gateway. While the platform offers various features and functionalities, the extent to which businesses can tailor and customize certain aspects of the service may be limited. This may not be ideal for businesses that require highly specific or specialized SMS communication workflows.

10. Telnyx SMS API

SMS Gateway APIs_Telnyx

Telnyx SMS API is a powerful communication solution that enables businesses to effortlessly integrate SMS capabilities into their applications, products, or services. With a robust set of features and an intuitive interface, Telnyx SMS API empowers developers to send and receive SMS messages globally, ensuring reliable and secure communication with customers worldwide.

Leveraging Telnyx's extensive carrier network and advanced messaging infrastructure, developers can easily incorporate two-way messaging, delivery status tracking, and message personalization, all while benefiting from Telnyx's industry-leading reliability and scalability. Whether for notifications, marketing campaigns, or customer engagement, Telnyx SMS Gateway provides a seamless and efficient way to enhance communication channels and optimize business operations.


  • Global SMS Messaging
  • Send SMS messages globally
  • Receive SMS messages
  • Two-way messaging
  • Delivery status tracking
  • Message personalization
  • Extensive carrier network
  • Advanced messaging infrastructure
  • Industry-leading reliability
  • Scalability for high-volume messaging
  • Seamless integration with applications and services
  • Efficient communication channels
  • Unicode and Multilingual Support


Telnyx pricing_text message apis US

Telnyx offers a pay-as-you-go pricing model, allowing you to pay only for the resources you consume.

  • The cost of Telnyx SMS API depends on factors such as the number of SMS messages sent and received, the destination countries, and the type of phone numbers used (long codes or short codes).
  • Outbound SMS messages have separate pricing for local and international destinations, with rates varying based on the specific country.
  • Inbound SMS messages are generally free, but some countries may have associated charges.

Notable Customers

Shopify, Lyft, Slack, Robinhood


  • Robust and Reliable Infrastructure: Telnyx SMS API is built on a robust and reliable infrastructure, ensuring the high availability and delivery of SMS messages. With Telnyx's carrier-grade network and extensive global reach, businesses can trust that their messages will be delivered reliably and efficiently.
  • Seamless Integration and Developer-Friendly: Telnyx SMS API service is designed with developers in mind, offering an intuitive and well-documented API. It provides easy-to-use endpoints and comprehensive documentation, making integration into existing applications or systems a smooth and straightforward process.
  • Advanced Features and Customization: Telnyx SMS Gateway offers a range of advanced features that enhance the functionality and customization of SMS messaging. From two-way messaging and delivery status tracking to message personalization and Unicode support, businesses can tailor their SMS communication to meet specific needs and engage customers effectively.


  • Pricing Complexity: Telnyx SMS API service pricing can be complex, especially when factoring in variables such as message volume, destination countries, and phone number types. The multi-tiered pricing structure and different rates for outbound and inbound messages can make it challenging to accurately estimate costs, potentially leading to unexpected expenses if not closely monitored.
  • Limited Feature Set: Compared to some other SMS API providers, Telnyx SMS Gateway may have a relatively limited feature set. While it covers essential functionalities like sending and receiving SMS messages, delivery status tracking, and two-way messaging, it may lack certain advanced features or customization options that are offered by competitors. Depending on your specific requirements, you may find that Telnyx SMS API falls short in meeting all your needs.

Benefits of a Text Message API Service

Text Message API services offer businesses a flexible and powerful way to incorporate SMS messaging into their communication strategies, enabling automation, personalization, real-time tracking, and reliable scalability. Below listed are the benefits of a text message API service.

  • Seamless Integration: An SMS API solution allows for easy integration with existing applications and systems. It provides developers with a set of programming instructions to send and receive SMS messages, enabling seamless integration into websites, mobile apps, or backend systems.
  • Automation and Efficiency: By leveraging an SMS API, businesses can automate their messaging workflows and streamline communication processes. APIs enable the sending of SMS messages programmatically, eliminating the need for manual intervention and enabling efficient communication at scale.
  • Personalized Messaging: With an SMS API, businesses can dynamically customize SMS content by incorporating variables, such as customer names or transaction details. This enables personalized messaging, enhancing customer engagement and improving the overall user experience.
  • Real-time Delivery Tracking: SMS API solutions often include delivery status tracking, allowing businesses to monitor the delivery of their SMS messages in real-time. This feature provides insights into message deliverability, helps identify any potential issues, and allows for prompt action if necessary.
  • Scalability and Reliability: SMS API services are built on robust infrastructure that ensures high availability and scalability. They can handle a large volume of SMS messages and deliver them reliably, even during peak periods. This scalability and reliability are crucial for businesses that require consistent and uninterrupted messaging services.

Factors to Consider When Choosing an SMS Gateway Solution in 2024

When choosing an SMS Gateway API solution, there are several factors to consider. Here are five key factors to keep in mind:

  • Reliability and Scalability: Look for an SMS API solution that offers a reliable and scalable infrastructure to ensure that your messages are delivered consistently and can handle increased messaging volumes as your needs grow.
  • Documentation and Ease of Integration: Consider the availability of comprehensive and well-documented APIs that make it easy to integrate the SMS solution into your existing systems or applications. Good documentation and developer-friendly tools can save time and effort during the implementation process.
  • Delivery Rates and Quality: Assess the SMS Gateway API solution's track record in terms of message delivery rates and overall message quality. A reliable solution should have high delivery success rates, minimal latency, and support for global messaging.
  • Customization and Personalization: Determine whether the text messaging API solution provides features for message customization and personalization. Look for options to include dynamic variables, such as customer names or personalized content, to create more engaging and effective SMS campaigns.
  • Security and Compliance: Ensure that the SMS API service prioritizes security measures to protect your data and messages. Look for features such as encryption, secure connections (HTTPS), and compliance with relevant data protection regulations, such as GDPR or HIPAA, depending on your industry and location.


In conclusion, as a developer looking for the best SMS API solution in the United States (US) to enhance your business's communication with customers in 2024, you have a wide range of options available. The 10 text messaging APIs discussed in this blog provide powerful tools to streamline your messaging processes and deliver exceptional customer experiences. 

By leveraging the power of these top SMS Gateway APIs, you can unlock new possibilities for engaging with your customers, improving operational efficiency, and ultimately driving business growth in 2024.

App0 is one AI-powered customer messaging platform that combines client-facing apps, industry solutions, and data. It is the best SMS API Gateway provider in the US, that is built for developers at all skill levels. A few of its top platform features and capabilities are mentioned below:

  • Turnkey EasyApps and SDKs for a large number of  Client Facing use cases
  • No code configurations for quick time-to-market
  • Industry-specific integrations
  • Core platform with built-in support for AI use cases
  • Current solutions have no built-in intelligence, e.g., no send time optimization, no personalization, and no co-pilot.

Request a demo with App0 now to stay ahead of the curve and leverage the capabilities of our cutting-edge SMS APIs to enhance your messaging strategy and meet high-level business objectives with uncompromising security & compliance.

Power Customer Acquisition for Enterprises Using AI

App0 offers a flexible no-code/low-code platform to enable financial services, retail & E-Commerce enterprises to launch AI agents faster & at scale with no upfront engineering investment. Sign up with App0 for AI-powered customer acquisition and customer engagement.

See a demo

Best SMS API Gateways: FAQs

Launch conversational AI-agents faster and at scale to put all your customer interactions on autopilot.

Download Ebook