A2P 10DLC Campaign Vetting Delays: Twilio cannot approve 10DLC Campaigns ourselves, and must rely on third parties who control our connections to carriers to sign off. These external processes are creating several week delays for our customers. We continue to escalate these issues and are working to reduce delays wherever possible. Further details will be shared in the Campaign Vetting Changes article as they become available.

Using Alphanumeric Sender ID with Messaging Services

You can use Alphanumeric Sender ID to send messages to supported countries when using Messaging Services. Twilio will automatically select your Alphanumeric Sender ID when sending to a supported country, unless you have a short code for that country in your pool.

Add Alphanumeric Sender ID to a Messaging Service

To add an Alphanumeric Sender ID to your Messaging Service, follow these steps:

  1. On the Messaging Services Console page, click on the Messaging Service you want to add the Alphanumeric Sender to.
  2. Click "Sender Pool" on the left side menu.
  3. Click "Add Senders" on the right side of the console.
  4. Select "Alpha Sender" from the drop-down
  5. Click "Continue" and specify the Alphanumeric Sender ID you wish to use.

Alphanumeric Sender ID Formatting Requirements

Alphanumeric Sender IDs can contain up to 11 characters from the following categories:

  • Upper-case letters A - Z
  • Lower-case letters a - z
  • Numbers 0 - 9
  • Spaces
  • The following special characters can be used:
    • +
    • -
    • _
    • &

Alphanumeric Sender IDs must contain at least one letter. 

You can find the full list of countries where Alphanumeric Sender ID is supported in the FAQ International support for Alphanumeric Sender ID.

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