Text to Speech API

Convert text into human speech and broadcast a custom voice message to your entire contact list with our easy-to-use text to speech web API service.

What is Text to Speech?

The name says it all. But if you’re looking for more detail, we’ve got you covered. Text to speech is a form of speech synthesis, which is the artificial production of human speech. Software and hardware with TTS functions “read” and convert written text into speech. Text to speech services converts your text into phonetic representations. It then converts that into waveforms that output as regular speech sounds.

Our text to speech API is no different; it converts raw texts to written words and then assigns phonetic transcriptions to those words. Text to speech, also sometimes referred to as text to voice, is easily integrated into current marketing strategies across various industries. Businesses around the world have leveraged TTS for purposes ranging from marketing to education to recreation.

Text to Speech Web API Features

Seamlessly turn text into speech and build, schedule, then send thousands of automated voice calls to your customer’s mobile or landline devices with our affordable text to speech phone call service. Esendex’s text to speech API comes loaded with incredible features that will help advertise your products and services nationally.

Interactive Voice Response

Build manageable call flows that deliver incoming calls to the correct department and representative without issue.

Answering Machine Detection

Our voice broadcaster can determine if a human, fax, or answering machine picks up outgoing calls from your business.


Transform your text messages into an automated voice call in multiple voices and languages to send to customers.

Press 1 Voice Campaign

Enable callers to enter numbers on their devices that either collect information or route calls to different departments.

Outbound Conference API

Our voice message broadcaster connects calls to a conference & communicates with multiple people at once.

Multichannel Communication

Our automated voice broadcasting service can send mass phone calls & bulk SMS to your entire contact list.

Real-Time Reports

Our phone broadcasting API provides detailed reports of calls back to your database for analysis, optimization, & call tracking.

Mobile & Landline Calls

Easily broadcast voice messages directly to customers using mobile and digital landline devices to reach everyone.

Call Quality Monitoring

Gauge mass call conversations between customers and staff to improve customer service and other business systems.

Why Use Our Text to Speech Web API Services?

We’re a text-to-speech company that genuinely cares about the success of your business. You’re not just another company, and you have unique marketing needs, which is why we made sure our voice API goes above and beyond the average text-to-speech web API.

Safety & Security

Our data centers are engineered with multiple levels of security, uninterruptible power supplies (UPS), redundant HVAC systems, and fire suppression, as well as 24/7 monitoring and management. We’re also fully redundant with location fail-over and offer HTTPS URLs for added security.

Competitive Prices

With post-pay billing, you get the phone lines, press 1 dialer, and IVR phone system all at a per-transaction rate. That means you only pay for what you use—no hidden fees, no contracts, and no surprise charges. We offer competitive rates for international and domestic calls.

Simple Text to Speech Documentation

Our open-source text-to-speech API documentation is easy to understand and implement in your business. You can connect to our text-to-speech phone call service using any programming language capable of REST or SOAP calls. Contact one of our experts for help with integration.

  • Uncomplicated Voice API References
  • Code in Multiple Programming Languages
  • Detailed FAQ Section to Answer Questions
  • Get Technical Support for Any Issues

Text To Speech Benefits


Convenient for who? Everyone! Text to speech is not only convenient for businesses to use, but it’s also quick and easy for customers.


Text to speech is compatible across multiple programming languages and has several integration options.


TTS benefits everyone, especially the visually impaired and people with disabilities related to text, such as dyslexia.


Our API is easy to learn and use, but just in case, we also have extensive documentation and quick start guides.


Languages are no longer a barrier with our voice broadcast service. We support multiple languages so you can send calls anywhere.


You can use text to speech engine software for almost anything! Reminders, alerts, regular messages, and more.

Standard Text to Speech Use Cases

Below are some of the most common uses cases for text to speech that you can implement into your business to increase sales and lead generation.

Appointment Reminders

Emergency Alerts

Delivery Status Notifications

Password Resets

Customer Loyalty Rewards

Courtesy Holiday or Birthday Calls

Payment Reminders

Marketing & Promotions

Credit Card Verifications

Password Authentication & Resets

Political Campaign Messages

School Alerts & Weather Notices

Event Planning

Phone Call Blasts

How Does Esendex’s Text to Speech Work?

We don’t want to toot our own horn, but we think our text to speech API is the best that’s currently available (toot, toot). Our voice broadcast service can send up to 12,000 tier-1 quality phone calls per minute. You can use text to speech, WAV files, or both to create relevant call scripts according to your phone messaging needs.

What Will the Text to Speech Phone Call Sound Like?

If you like listening to the sound of your voice, we’re sorry to say that you’re out of luck. But if you’re looking for a strong and clear voice, we’ve got plenty of those! (But may we suggest our Ringless VoiceMail Drop?)

With dozens of voices to choose from, you are sure to find one that meets your needs. Our selection offers a range of languages, ages, and genders. Want to explore voices? Check out our complete voice list.

Can’t find the right fit? Contact sales today and let us know what you’re looking for in a voice ID.

What Our Customers Have to Say

See why our customers think Esendex has the best voice broadcasting service. We’ve been rated 5 out 5 stars on Capterra, GetApp, Google, and Facebook – based on 40+ reviews.

Quality Customer Support

Most voice broadcasting companies don’t have active online support channels customers can speak to when they need it the most, and we understand. That’s why we have 24/7, around-the-clock emergency support for our voice messaging service.

Expect fast response times, fast troubleshooting, and easy-to-read voice API documentation that will never leave you waiting for answers. Contact us via live chat, phone, or email about our voice API today.

Products for a range of use cases


Texting API designed to send & receive SMS & MMS globally using a short code or 10DLC number.

SMS Software

Easy to use SMS software that can send & receive SMS & MMS using a short code or 10DLC number.

Voice Broadcast

Powerful voice API that sends mass automated phone calls quickly to mobile & landline devices.

Phone Verification

Verify mobile & landline numbers, find service providers, & define time zones to restrict calling.

Let’s start sending, together.