Using Alphanumeric Sender IDs in Twilio

Twilio allows using a personalized Alphanumeric Sender ID, such as your company name, as the outgoing number for sending SMS messages. You can find the details on the Twilio website.

Alphanumeric Sender IDs have some limitations, such as:

• They are only supported in some countries. Learn more
• They are only available for outgoing SMS, and cannot be used for incoming SMS or voice notifications.

For more information, use the Twilio website link provided above and view the Limitations of Alphanumeric Sender IDs section.

To use an Alphanumeric Sender ID, you need to add the ID to the Phone Numbers tab in the Twilio configuration in Workbench and set it as the default outgoing phone number. Learn more

The Alphanumeric Sender ID's format has the following requirements.

• It can contain up to 11 characters from the following categories:

  • Upper-case letters A - Z
  • Lower-case letters a - z
  • Numbers 0 - 9
  • Spaces
  Some carriers may impose minimum length restrictions. This means that your Alphanumeric Sender ID might be modified or replaced by a generic sender ID, such as "unknown".
• It must contain at least one letter.
• Special characters and punctuation are not allowed.