Alpha Sender ID
Request a custom alphanumeric sender ID to brand your outgoing messages.
An alpha sender ID lets you replace the default numeric sender with a recognizable name — for example, MyBrand instead of a phone number. Recipients see your name in the "From" field before they even open the message.
What qualifies as an alpha sender ID
- 1–11 characters
- Letters (
A–Z,a–z), digits (0–9), and spaces - Must not consist of digits only (that would be a numeric sender)
- Must represent your brand or organization name — generic or misleading names are rejected
How to request one
Alpha sender IDs are provisioned manually by the Moorsyl support team. To request one, send an email to support@moorsyl.com with the following information:
| Field | Details |
|---|---|
| Organization name | The name registered on your Moorsyl account |
| Requested sender ID | The exact string you want to use (max 11 characters) |
| Use case | A brief description of how and why you'll use it |
The team will review your request, verify it against your account and intended use, and respond with confirmation or follow-up questions. Approval typically takes 1–3 business days.
After approval
Once approved, your sender ID is registered on your organization. You can then pass it as the from field in any SMS API request:
curl -X POST https://api.moorsyl.com/api/sms \
-H "Content-Type: application/json" \
-H "x-api-key: sk_live_..." \
-d '{
"to": "+22236551999",
"from": "MyBrand",
"body": "Your order #1042 has been shipped."
}'Requests using an unapproved sender ID will be rejected with a 400 BAD_REQUEST error.
Reasons a request may be denied
- The name is already in use by another organization
- The name is generic, misleading, or impersonates a third party
- The use case does not comply with Mauritanian telecommunications regulations
- Insufficient account information to verify ownership of the brand
If your request is denied, the support team will explain the reason and, where possible, suggest an alternative.