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SMTP Credentials

  • Host: smtp.sendrealm.com
  • Port: 587 (STARTTLS) or 465 (SMTPS)
  • Username: smtp or smtp:PROJECT_ID
  • Password: your API key
With username smtp, Sendrealm automatically selects the project that owns the envelope sender (MAIL FROM) domain. To select a project explicitly, use smtp:PROJECT_ID as the username. In both modes, the API key must include email.send, the key must have access to the resolved project, and the sender domain must belong to that project. Missing, unauthorized, or ambiguously assigned domains are rejected. Existing smtp credentials remain valid and require no changes.