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Understanding SmartRelay

SmartRelay uses a range of functionality to send messages. Click the appropriate link for more details about each aspect of SmartRelay:

See Using SmartRelay for more about:

  • Supported email messages
  • SMS Message Requirements
  • SmartRelay special headers
  • Protecting SmartRelay from abuse
  • Managing network issues
  • Troubleshooting SMTP codes and errors
  • Email headers