List of The 8 Cheapest SMS API Providers

  • Notifyre – Affordable SMS API with advanced features.
  • TrueDialog messaging multi messaging channels for businesses.
  • Vonage – Cloud comms with SMS API solutions.
  • MessageBird – Innovative SMS API for automation.
  • Clickatell – Trusted SMS API for secure messaging.
  • Trumpia – All-in-one SMS marketing with affordable pricing.
  • BulkSMS – Cost-effective SMS API for high-volume messaging.


Looking for an SMS API provider that won’t break the bank? Check out our top picks for the most affordable and reliable options on the market. Our top choice is Notifyre, which offers a robust set of features at a highly competitive price point.

Other great options include Clicksend, Cellcast, Vonage, MessageBird, Clickatell, Trumpia, and BulkSMS, each with their own unique strengths and pricing structures. With these affordable SMS API solutions, you can streamline your messaging strategy without sacrificing quality or reliability. Whilst there are numerous providers in the market (which can make it difficult to select the best fit for your business) we’ve created a list of the Cheapest SMS API providers.


SMS Provider Reviewed

Overall rating
Price (out of 5) 2 5 4.5 4
Tools (out of 5) 4 5 4.5 3.5
Trust (out of 5) 4 4.5 4 4
Customer service (out of 5) 3.5 4.5 3 5
Years founded 2006 2008 2010 2006
Listed or Private company Private Private Private Private
Head Office Perth, Australia Austin, Texas New Jersey, USA California, USA


Price per smsClickSendTrueDialogVonageTrumpia
  • Custom
  • 250K
  • 125K
  • 15K
  • 1K
  • $0.0093 per SMS



Payment mode Prepaid & Invoice Pay-as-you-go, Pre-Pay Prepaid & Invoice Monthly Plan, Pre-Pay
Price match
Set up fees
Monthly fees
Payment methods Credit Card or Direct Debit Pay-as-you-go, Pre-Pay N/A Monthly Plan, Pre-Pay
Payment mode Prepaid & Invoice Prepaid & Invoice Prepaid & Invoice Credit card or direct debit
Price match
Set up fees
Monthly fees

SMS Functions

API for Developers
The Vonage API Platform
Software needed
SMS Gateway API
2-Way SMS
Email to SMS
Carriers American & Overseas American & Overseas Global Global
Dedicated number
Inbound SMS Free
Money back guarantee


Global coverage
Gateway uptime 100% 99.99% 99.99% N/A
SLA guarantee
Spam compliant
Security and Privacy policy

Customer care service

Free trial
50 Free SMS
Phone support
Email support
Support hours 24/7 9am - 5pm 24/7 24/7
Reviews Trustpilot = 4.4/5 - 876 reviews 4.8 - 15 Reviews Trustpilot = 2.3/5 - ‎7 reviews 4.3/5 - ‎51 Reviews


Overall rating 6.6 9.6 8 8
Visit Site Visit Site Visit Site Visit Site


Notifyre Is America’s Cheapest SMS API Provider

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Having compared the cheapest SMS API Providers in the USA in 2024, Notifyre has won the title as most affordable, based on:

  • Lowest (by far) SMS API prices at $0.007 per SMS for 5 Million messages
  • Enterprise-grade SMS API solutions at affordable prices
  • 99.99% SLA Guarantee
  • Strong direct carrier connections with AT&T, T-Mobile, and Verizon
  • Choose from subscription or pay-as-you-go plans
  • Send SMS at scale for less using a single API Call.

Notifyre Review >>Visit Notifyre >>

Our Rating

The overall rating is based on review by our experts

Value For Money
10 / 10
9 / 10
9.99 / 10
9.5 / 10
9.5 / 10
Customer Service
9.5 / 10

SMS API: An Introduction

An SMS API is a powerful software integration interface designed to facilitate the seamless sending and receiving of short messages via an SMS API platform. By incorporating an SMS API into your applications or systems, you can create customized SMS channels that enable efficient and targeted communication, including text, images, and multimedia content. This versatile tool is widely employed across various industries for purposes such as marketing campaigns, customer support, appointment reminders, and notifications, offering a highly effective means of communication that can be tailored to meet specific business needs.

What Is An SMS API?

When one researches the features and services provided by SMS marketing providers, the SMS marketing API, and its efficiency is always discussed. But what is an API? An API is an acronym for Application Programming Interface, which is an IT software allowing a programmer to formulate a computer program that will make it easier to send text messages to recipients in a quick and effective manner. An SMS API might use rest API Systems use java, python, json, PHP, as well as many other programming languages and can be for a web-based system, operating system, or database system. Basically, it is a system that makes it easier for the programmer to gather and send information systematically. For example, the client may send an email with the text message required to be sent and the API file will give the developer the ability to copy files from one area to another without the developer having to understand the total file system operations.

Different SMS Marketing providers emphasize that an API is more than an exchange of text and image message service (SMS MMS SMPP) but a powerful software platform to simplify the text messaging service and ensure full and reliable delivery of bulk SMS messages.

How Does SMS API Work?

To start the process, the client needs to upload a file that has all the names of people that wish to be contacted. This may include email addresses or mobile phone numbers. A business must ensure that these audiences want to be conducted through the ability to opt-in, whether this is through sending shortcodes or sign-up forms, or OTP codes with a custom sender ID.

After this, the SMS gateway API will go through the following process:

  1. The details are exported from an email program to the SMS campaigns on SMS marketing API platforms. It can be established as an online calendar containing appointments or reminders. The data format is processed using platforms such as Google,, Yahoo, or iCloud. Two-factor authentication is often required.
  2. The marketing text message can be edited at any time and an SMS service provider or business can work out when the message needs to be sent, whether it is straight away or in a few days’ time.
  3. As an SMS text marketing client, one can monitor the marketing effectiveness by the take-up rate. Whether a large or small business, such valuable information is extremely cost-effective and the SMS API software has the ability to send delivery reports for analysis.
  4. The process can be completely automated or a business can opt to manually verify each text message before it is sent to add another form of personalization.

SMS API Software Features

There is a lot that goes into sending a simple text message to a target consumer from a business’s chosen system. Luckily for American businesses, SMS marketing API software makes the process easy, and doesn’t require extensive information. Reliable, customizable, and scalable to your needs, an SMS API service is a way for developers to connect to a Bulk SMS gateway. This means the client can SMS-enable a website or a system process (such as an email to SMS database) to send and receive text messages in various ways.

The features of an SMS marketing API integration include:

  • Sending and receiving text messages through a reliable telecommunication carrier
  • Sending transactional SMS or SMS Confirmation or OTP messages.
  • Knowing which message has been sent to a given point of contact
  • Having the ability to receive incoming SMS from customers on android, iOS, and even WhatsApp.
  • Tracking messages with the time of day the message was distributed and received on the mobile phone
  • In the case of receiving information that a message has not been delivered, the ability to take appropriate action by continuing to deliver the SMS by a certain time
  • Knowing it is the real-time delivery of inbound SMS which is great for companies that need responses from customers or staff.


What Should You Look For In An Cheap SMS API?

Firstly, a business must ensure that the SMS gateway provider follows the laws, regulations, and best practices around any SMS marketing activity. The SMS marketing provider must be anti-SPAM compliant and should have its own privacy policy in place for the security and confidentially of all parties involved. As the mobile marketing industry is highly personal, it is a heavily regulated communication channel, thus businesses can’t just automate, but must ensure they are following the rules to reduce the likelihood of running into trouble. For example, a company must gain permission from its audiences (in other words, enable them to opt-in), whether this is through a form, or texting a short code to a dedicated number. Some SMS API providers also have specific prices related to toll-free numbers, which needs to be checked across each provider.

From a marketing perspective, please do not use words like ‘free’ unless you have a free-to-end user condition. All promotions and communication should include name, description, conditions, and the ability to opt-out if required.

Thirdly, SMS marketing providers should have shortcodes, which are five-digit numbers used for SMS messaging, and one should not be made to purchase but rather use the provider’s codes. Such services can be established for automatic replies to incoming SMS, therefore you should not be charged for inbound messages.

Overall, the reliability of the SMS marketing API provider is of the utmost importance. The reliability of an SMS company can be measured by its statement of an uptime guarantee, which should be at least 98%. This will mean that the provider’s success rate is almost at 100%. The core SMS providers have been outlined and rated below based on reliability.

So What’s The Cheapest SMS API?

When considering all the factors of an SMS marketing API provider, including software facilities, reliability, features, customer relations, compliance, costs, and more, it was found that overall, Notifyre offered the best outbound SMS services within the American industry. Not only does Notifyre offer highly valuable rates for small, medium, and large businesses, but they also offer a range of services, backed up by a highly reliable system and great customer service. The provider offers a free SMS trial to enable businesses to try out their text message API and various features.

Notifyre offers features such as mass SMS API calls to send SMS, MMS, SMS scheduling, lookup, notifications, and more. To learn more about their features, services, and costs, visit their website below or view our extensive Notifyre SMS review.

Notifyre Review >>Visit Notifyre >>

Why Notifyre Has The Best Prices

It mainly comes down to volume pricing, Notifyre offers some of the lowest SMS API prices in the USA:

TrueDialog Long Code Pricing

  • $0.00700/message or $7.00 per 1k messages (first 5 million messages)
  • $0.00500/message or $5.00 per 1k messages (next 20 million)
  • $0.00300/message or $3.00 per 1k messages (next 75 million)
  • $0.00200/message or $2.00 per (next 150million)

TrueDialog Short Code Pricing

  • $0.0700/message or $7.00 per 1k messages (first 500k messages)
  • $0.0500/message or $5.00 per 1k messages (next 4.5 million)
  • $0.00400/message or $3.00 per 1k messages (next 20 million)
  • $0.00200/message or $2.00 per 1k messages (next 75 million)

TrueDialog Reliability

TrueDialog’s SLA is one of the best in the market at 99.99% up-time guaranteed.

Businesses of all sizes use TrueDialog and love their 99.99% up-time guarantee.

Notifyre Features

As the cheapest SMS API provider, Notifyre could by every right charge a premium for extra features, yet they have chosen to include them at affordable rates to be used by businesses of various sizes and for different use cases:

  • Ability to send short message appointment reminders automatically as well as alerts at scale.
  • Able to Schedule SMS with their custom scheduling engine to deploy reseller campaigns at custom time intervals
  • Capacity to communicate two ways with customers via two-way SMS delivery

Examples of CRM systems that Notifyre integrates with:

  • Microsoft Dynamics
  • Social Messaging Apps
  • Salesforce
  • Hubspot

And more.

Notifyre offers many unique features for text service at the cheapest SMS API prices in the USA, while also offering a 15-day free SMS API trial.

Visit Website >>

Cheapest SMS Faq

SMS Gateway API allow you to use simple query parameters through the URL that provides the SMS Gateway instructions for sending and receiving SMS. This is made possible by scripting languages ​​such as PHP that can be integrated into web forms and other applications that allow companies to send global SMS via HTTP APIs for marketing campaigns via mobile networks.

An SMS API is a software interface system that uses code to send SMS to customer libraries and cellular networks through SMS gateways. The technical infrastructure behind Bulk SMS is distributed across various delivery systems and interface software (such as SMS gateways). APIs are often seen as a bridge between these pieces of software, enabling more functionality by integrating with systems and reaching mobile numbers.

The best SMS APIs are cheap, easy to use, and scalable, making it easy for web applications and enterprises to send and receive SMS via pre-built logic.

Our list of the cheapest SMS API providers:

  • Notifyre
  • TrueDialogue
  • Vonage (Nexmo)
  • ClickaTell
  • MessageBird
  • Notifyre
  • BulkSMS
  • Trumpia


About Our SMS Gateway API Comparison Page

Our Cheapest SMS API page compares the prices of 8 SMS API Gateway providers in the USA. The information analyzed on the page was sourced from the SMS provider’s websites and tutorial material, however as data is subject to change, we recommended you verify the information with the provider. If you find any incorrect information, please contact us using our contact form, and we will amend it immediately. Our mission at SMS comparison is to assist American businesses in choosing the cheapest SMS Gateway API provider to meet their requirements.

    Ask an Expert

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    Kevin Gordon
    Kevin Gordon
    1 year ago

    I need to send a lot of texts out but I don’t have the biggest budget, who is the cheapest SMS API provider available on the market?

    Simon Mannheimer
    1 year ago

    Hi Kevin.

    There are plenty of cost-effective SMS gateways and services on the market, so it’s worth shopping around to get the best deal. Free trials or pay-as-you-go options may be available from some providers, making them great options for small businesses. However, it’s important to consider each provider’s reliability, security and customer support before settling on the cheapest option – the lowest price may not always be the most suitable choice! Hope that helps.

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