Authentication

SDP Email public API requests use sending API keys.

Bearer Token

Use a bearer token for the Resend-compatible endpoints:

Authorization: Bearer your_api_key

Basic Auth

Use Mailgun-style basic auth for the Mailgun-compatible endpoint. The username must be api and the password must be your SDP Email API key:

curl -u "api:your_api_key" \
  https://email.sdp-platform.com/v3/example.com/messages

Invalid Keys

Requests fail authentication when:

• The authorization header is missing.
• The key does not exist.
• The key has been revoked.
• The key does not have the sending scope.