Signal APIs

Discover the best list of alternative premium and free Signal APIs.

cloudwire Short Code SMS MMS

The short code API is a robust messaging API for compliant USA based short code SMS/MMS applications and further supports international SMS to nearly every country in the world. No long or short codes are required. For international SMS, utilizes local match long codes in over 45 countries. The developer utilizes our pool of shared codes to transact SMS. is a premier Twilio partner. An application is required describing your use case along with a separate authorization token. Mention you found us on Rapid API and receive a $25 testing credit. Pricing is consumption based similar to Twililo....however, there are additional charges for keywords such as text CLOUDWIRE to 345345. The application is here: • 5 USA supported short codes. • Compliant out of the box. manages STOP/HELP replies and blocks messages to opted-out subscribers. • Take advantage of up to 225 messages per second short code messaging throttle • Smart Queuing for low message latency • Higher USA deliverability with long code backups on short code delivery failures or unsupported short code carrier. • Create ad campaigns in seconds by creating custom keywords on two memorable short codes. (444999 and 345345) • Unlike competitors, build natural language SMS decision trees using guaranteed 2-way short code messaging. • Avoid threading concurrent requests and use our batch messaging calls for campaigns to send 5,000 SMS in one API call. • Send messages to anywhere in the world without managing long codes. Much of what you'll have to handle programmatically in any SMS application is automated by For in depth guides check out our mashape docs at We schedule use case calls all day and every day to walk you through what API methods you need to save you time. Don't be a stranger!

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Signal API

About Signal APIs

APIs and technology like Signal work to provide robust messaging capabilities in secure environments.

What is Signal?

Signal, by the Signal Technology Foundation, is a centralized encrypted messaging service that works seamlessly across multiple platforms. Users can send images, files, texts, videos, and voice memos to groups or single recipients. Group video and voice calls are also available.

How does the Signal API work?

Signal uses cell numbers as unique identifiers and incorporates end-to-end encryption to secure all communications sent through the network. Users of the application can also verify their contact’s identities and the network’s integrity from the included safety mechanisms.

Other SMS APIs allow the sending and receiving of various forms of communication through existing platforms. These APIs connect telecom companies to the internet, so there is no need for a middleman and logging in to send a message becomes a thing of the past. The API protocols allow for instantaneous messaging, saving businesses time and money. If a user has a cell phone and they have opted in to receive your messages, they will, without any further effort on anyone’s part.

Who can use message encryption APIs like Signal?

Anyone developing any type of messaging application would benefit from technologies like Signal. In a world of digital transmission, security is not an option.

Likewise, connectivity is necessary in the modern world, where everything is on-demand. Connecting with prospects and customers instantly is a requirement, and APIs allow this to happen.

These APIs allow businesses to operate 24/7, providing instant answers to customers even outside of regular customer service hours. Whereas email can make consumers think a business is antiquated, an instant communication system powered by an API increases customer satisfaction and retention.

Why is messaging encryption necessary?

The flow of data cannot be an open one. Too much private information transfers by the millisecond and even messaging applications have to take security measures to ensure that user’s personal information is secure from prying eyes and hackers.

What can you expect from the Signal API?

Signal provides messaging encryption, so users should expect their data and messages to be secure at all points. Others APIs like Signal may provide developers with phone verification, two-factor authentication, enhanced messaging capabilities, transcoding, local phone number lookup, video and IP messaging, and more.

Are there examples of free Signal APIs?

  1. D7SMS
  2. Twilio SMS
  3. Telesign SMS Verify
  4. ClickSend SMS
  5. SMS77io
  6. MoGreet
  7. Twilio Copilot
  8. Twilio
  9. CloudWire Short Code SMS MMS
  10. 46elks

Signal API SDKs

All Signal APIs are supported and made available in multiple developer programming languages and SDKs including:

  1. Node.js
  2. PHP
  3. Python
  4. Ruby
  5. Objective-C
  6. Java (Android)
  7. C# (.NET)
  8. cURL

Just select your preference from any API endpoints page.

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