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BRANDED SMS SENDER IDS

Send SMS from your brand with Alphanumeric Sender IDs

Alphanumeric Sender IDs replace a phone number with your business name so customers can instantly recognize who a message is from. They help build trust, strengthen brand recognition, and make one-way SMS feel more credible.

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Top brands rely on Sinch Engage to reach their customers

WHY IT WORKS

Brand recognition and clarity in every text message

When your business name appears as the sender, customers know who the message is from before they even open it. That makes Alphanumeric Sender IDs especially useful for branded one-way messaging like alerts, updates, promotions, and authentication messages.

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Instant brand recognition

Show your business name in the sender field so recipients know who the message is from before they even open it.

Build trust at a glance

Give your business communications a more professional and established look with a branded sender identity.

Clarify message purpose

Use different sender IDs to distinguish promotional messages from service updates and other important communications.

What are Alphanumeric Sender IDs?

An Alphanumeric Sender ID is a text messaging name made up of letters and numbers that replaces a phone number in the sender field. Sinch Engage describes it as a business name or unique identifier of 3 to 11 characters. It supports one-way messaging only, so recipients can’t reply directly.

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What countries are Alphanumeric Sender IDs available in?

Alphanumeric Sender ID is available in select countries and subject to local market requirements. You can use it in Australia, France, Indonesia, Ireland, Italy, Oman, Pakistan, Singapore, Spain, Uganda, the United Kingdom, and Vietnam. Requirements vary by destination and may change, so always confirm availability before launch.

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Countries where registration is required

Registration is required in some markets before you can send with Alphanumeric Sender ID. This includes Australia and Singapore, with additional registration support needed for Indonesia, Italy, Oman, Pakistan, and Uganda.

Countries where registration is not required

In France, Ireland, Spain, and the United Kingdom, Alphanumeric Sender ID can be used without registration.

Important note for Australia

Australia is introducing stricter requirements for branded sender IDs. From July 1, 2026, Alphanumeric Sender IDs used for messages to Australian mobile numbers must be registered and approved, or messages will display as “Unverified” instead of your business name.
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How to set up Alphanumeric Sender ID

Setting up Alphanumeric Sender ID starts in the Sinch Engage portal, where you add a sender ID, choose the countries you want to use it in, and submit your request for review. Approval is subject to review and may require additional registration depending on the destination country.

  • Step 1: Choose the countries where you want to use Alphanumeric Sender ID.

  • Step 2: Enter your sender name and confirm it matches your business and intended use case.

  • Step 3: Complete any required registration steps for supported markets such as Australia or Singapore.

  • Step 4: Start sending branded one-way messages from Sinch Engage.

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Why choose Sinch Engage for Alphanumeric Sender ID

Sinch Engage gives businesses an easy way to send branded business messaging through a texting platform built for customer communications at scale. Sinch Engage highlights built-in analytics, GDPR and ISO27001 compliance, native integrations with tools like HubSpot, NetSuite, and Salesforce, plus global support and infrastructure.

  • Easy setup with multiple ways to send.

  • Integrations with HubSpot, NetSuite, Salesforce, and more.

  • Built-in analytics to track engagement and delivery performance.

  • Enterprise-grade compliance and data security.

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FAQS

Answers to your questions about Alphanumeric Sender ID

Alphanumeric Sender ID replaces a phone number with a business name or custom identifier in the sender field. It is typically 3 to 11 characters long.

No. Alphanumeric Sender ID supports one-way messaging only, so recipients can’t reply directly.

Alphanumeric Sender IDs are generally 3 to 11 characters long. Australia’s registration FAQ also notes sender IDs must be no more than 11 characters and include at least one letter.

Sinch Engage currently supports Australia, France, Indonesia, Ireland, Italy, Oman, Pakistan, Singapore, Spain, Uganda, the United Kingdom, Vietnam, and the United States. Requirements vary by country.

Yes, in some markets. Registration is required in Australia and Singapore, and customers should contact support to register in Indonesia, Italy, Oman, Pakistan, and Uganda.

No. If you need recipients to reply, a dedicated number is a better fit.