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A Sender Name (also known as a Sender ID) is the identifier displayed on a recipient’s device when they receive a message from your application. Examples:
Sender Names help recipients recognize your brand, improve trust, and increase engagement.

Supported Types

Alphanumeric

Brand-based identifiers such as ZECKTA, MyShop, or AcmeBank. Best suited for alerts, notifications, OTPs, and transactional messaging.

Numeric

Phone number-based identifiers used in regions where alphanumeric Sender Names are not supported or where two-way messaging is required.

Sender Name Lifecycle

Every Sender Name follows an approval workflow.
or

Statuses


Requesting a Sender Name

Submit a Sender Name request for review and approval.

Request Body

Supported Sender Types

Example Request

Example Response


Managing Sender Names

The Sender Names API allows you to manage Sender Names within your workspace.

Sender Name Response Fields


Using a Sender Name

Once approved, the Sender Name can be supplied in SMS requests.
Only approved Sender Names may be used for message delivery.

Workspace Isolation

Sender Names are isolated at the workspace level. A workspace can only:
  • View its own Sender Names
  • Update its own Sender Names
  • Delete its own Sender Names
  • Use Sender Names registered within the same workspace
Cross-workspace access is not permitted.

Compliance Requirements

Sender Name requirements vary by country, carrier, and destination network. To improve approval rates:
  • Use a name that clearly matches your business or brand.
  • Avoid impersonation of financial institutions, government agencies, telecom operators, or third parties.
  • Provide an accurate messaging purpose during registration.
  • Ensure your messaging activity complies with local telecommunications regulations.

Best Practices

  • Use a consistent Sender Name across your messaging campaigns.
  • Keep Sender Names short and easily recognizable.
  • Register Sender Names before launching production traffic.
  • Test delivery behavior in destination markets where possible.
Using an unapproved Sender Name may result in message rejection, carrier filtering, or reduced delivery performance.

Send Single SMS

Send messages using an approved Sender Name.

Create Campaign

Use Sender Names in bulk messaging campaigns.