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Alphanumeric Sender IDs

Global, recognizable custom alphanumeric sender IDs for 1-way SMS, sent via the Telnyx Messaging API.

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ABOUT

Build a brand with alphanumeric sender IDs

Improve trust with highly recognizable and customizable Alphanumeric Sender IDs. Use almost any combination of letters and characters to promote your brand around the world at high volume. Get all of this via the award-winning Telnyx Messaging API.

FEATURES

Custom, recognizable, global alphanumeric sender IDs

Send SMS with Alphanumeric Sender ID via Telnyx so that your customers receive messages from a memorable, global brand at high volume.

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    Memorable sender IDs

    Improve trust and create a consistent customer experience with sender IDs that match your brand.

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    Go global with one brand

    Ensure brand consistency by sending to customers worldwide from your own tailored sender IDs to over 200 country codes.

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    High volume

    Alphanumeric sender IDs allow for tens of thousands of messages per minute, so scaling isn’t an issue.

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    Authentication

    Protect your security and enable signature generation to verify Telnyx webhook requests.

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    Message concatenation

    If a SMS that was sent via the Messaging API is too long for its destination, the Telnyx messaging API will automatically separate it into two messages.

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    Intelligent message encoding

    We support any character set and language type. Our system automatically chooses the most compact encoding possible, minimizing cost per send.

BENEFITS

True global reach

Telnyx supports all major country codes for alphanumeric SMS. Our built-for-scale platform and expert team can help

190+

Supported country codes

Developer-friendly, scalable API

Among SMS API providers, Telnyx consistently wins awards for its results and ease-of-use. We take care of the details as you scale, so you don’t have to.

#1

Ranked API for results and ease of use

HOW IT WORKS
Talk to an expert
RESOURCES

Get started

Our code is your code.

curl -X POST \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer YOUR_API_KEY" \
  --data '{
    "from": "Telnyx",
    "to": "+13115552367",
    "text": "Hello, world!",
    "messaging_profile_id": "YOUR_MESSAGING_PROFILE_ID"
  }' \
  https://api.telnyx.com/v2/messages
  • Icon Resources Docs

    DevDocs: Sending with alphanumeric

    Read our developer documentation on how to send via our Messaging API with an alphanumeric sender ID.

    Explore docs
  • Icon Resources Article

    Country support for global alphanumeric messaging

    Read our support article on which country codes support alphanumeric sender IDs and learn whether or not registration is required.

    View list
PRICING

Alphanumeric Sender ID pricing

Our team is committed to providing you with competitive rates, including contracted commitment discounts for large volumes.

Starting at:

$0.033

per message
See pricing
SOLUTIONS

Alphanumeric sender ID use cases

Sign up and start building

Talk to an ExpertSign up

FAQ

Getting started is simple. Start by setting up a free Telnyx account, getting Level 2 verification, and following the Alphanumeric Setup Guide for our SMS API. If you have any questions, get in touch with our team of experts and we’ll help you get the answers you need.

Getting started is simple. Start by setting up a free Telnyx account, getting Level 2 verification, and following the Alphanumeric Setup Guide for our SMS API. If you have any questions, get in touch with our team of experts and we’ll help you get the answers you need.

Resources, Docs, Support

Alphanumeric Sender Id hub

  • Article icon

    Alphanumeric Sender (Messaging) | Telnyx

    Set up Alphanumeric Sender IDs with Telnyx for identifiable one-way text messages.

    Read more
  • Article icon

    Send a Message on the Telnyx Platform | Telnyx

    Learn to send SMS and MMS using Telnyx API with curl commands. Simplify your messaging today.

    Read more
  • Article icon

    Messaging character and rate limits (Messaging) | Telnyx

    Understand Telnyx SMS limits. Our guide helps you optimize message length and sending rates for best performance.

    Read more
  • Article icon

    Telnyx Messaging Types | Telnyx

    Telnyx's Developer Documentation provides all the information you need to get started with messaging on our platform. This includes tutorials, code samples and more.

    Read more
  • Article icon

    Messaging APIs | Telnyx

    With the Messaging family of products, you can send and receive SMS/MMS messages from your apps, facilitate interaction with The Campaign Registry (TCR) for 10DLC compliance, and more!

    Read more
  • Article icon

    Send a message API | Telnyx

    Send a message with a Phone Number, Alphanumeric Sender ID, Short Code or Number Pool.

    Read more
  • Article icon

    Create a messaging profile API | Telnyx

    Create a messaging profile

    Read more
  • Article icon

    Retrieve a phone number with messaging settings API | Telnyx

    Retrieve a phone number with messaging settings

    Read more
  • Article icon

    Update a messaging profile API | Telnyx

    Update a messaging profile

    Read more
  • Article icon

    What is SMS? Complete guide to short message service

    SMS (short message service) is one of the most popular messaging technologies. Learn about its benefits and how it compares to other messaging options.

    Read more
  • Article icon

    Learn about the powerful features of the Telnyx SMS API

    What is an SMS API? Dive into the world of real-time messaging, which connects apps to telecom networks, and discover its potential for your business.

    Read more
  • Article icon

    What is an SMS number? SMS number types explained

    Discover the different SMS number types and their unique advantages. Learn how to choose the right SMS number type for your business needs.

    Read more
  • Article icon

    Conversational SMS | Complete Guide to the Future of Texting

    In a sea of robotic messaging and automation, conversational SMS is driving dialogue and providing customers with the personal touch they deserve.

    Read more
  • Article icon

    Mastering SMS character limits: Why it matters

    Learn about SMS character limits to avoid these four obstacles businesses face when texting.

    Read more
  • Article icon

    Telnyx - How to Ensure Compliance With SMS Regulations.

    There are regulations that dictate how organizations can interact with end users via text. Understand what the rules are & how to comply with them.

    Read more
  • Article icon

    CTIA guidelines: Mastering messaging compliance

    Learn about CTIA guidelines and how they ensure your messaging program stays compliant.

    Read more
  • Article icon

    Mass text messaging: How to get started with Telnyx

    Learn the advantages of mass text messaging for business and how to send messages in bulk with the Telnyx SMS API.

    Read more
  • Article icon

    Types of phone numbers and their business use cases

    Discover different types of phone numbers, their benefits, and which number is the best fit for your use case.

    Read more
  • Article icon

    Telnyx Blog | CPaas & UCaaS Resources

    Find data-driven research, comprehensive guides and all things SIP trunking, voice and SMS APIs, wireless and more.

    Read more
  • Article icon

    The Better Twilio Alternative - Telnyx

    Switch to Telnyx for a better Twilio alternative. Benefit from our competitive pricing, private global network, and award-winning support.

    Read more
  • Article icon

    Top 5 Twilio Verify API alternatives

    Looking for the best verification API for your business? Don’t just default to Twilio Verify API. Consider some of these great options instead.

    Read more
  • Article icon

    Alphanumeric Sender ID | Telnyx Help Center

    Depending on the location, Alphanumeric Sender IDs can change. Telnyx facilitates smooth global SMS delivery.

    Read more
  • Article icon

    Sending Alphanumeric SMS - Sender ID | Telnyx Help Center

    This article gives an overview of how you can start sending Alphanumeric SMS

    Read more
  • Article icon

    Telnyx SMS Guide | Telnyx Help Center

    Here you will find a collection of links that will explain how to build applications using our SMS offering.

    Read more
  • Article icon

    Getting Started with Messaging | Telnyx Help Center

    Begin with Telnyx messaging: Toll-free, error codes, SDKs, and webhook utilization.

    Read more
  • Article icon

    Country Specific SMS Guidelines | Telnyx Help Center

    A list of various countries and their SMS guidelines for easy communication.

    Read more
  • Article icon

    Telnyx Messaging Error Codes | Telnyx Help Center

    This article provides a breakdown of the messaging error codes used by Telnyx and their meanings!

    Read more
  • Article icon

    SMS Marketing API and Platform [Use Cases]

    Enhance your SMS marketing with Telnyx's powerful API and platform. Start optimizing your campaigns today.

    Read more
  • Article icon

    SMS API | Built for CRM and Sales

    Enhance your CRM tool with our SMS API. Build customer relationships seamlessly while ensuring compliance with data and privacy restrictions.

    Read more