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SMTP Node

What it does​

Sends email messages through an SMTP server using configured SMTP credentials.

Inputs/config​

  • SMTP credential reference.
  • From/to/cc/bcc addresses.
  • Subject, text/html body, optional attachments.

Outputs/branches​

  • Uses matched_output.
  • success when message is accepted by SMTP server.
  • error on auth, connectivity, or send failure.

Example usage snippet​

{
  "id": "n_smtp",
  "type": "smtp_node",
  "config": {
    "to": ["[email protected]"],
    "subject": "Gateway alert",
    "text": "A workflow error occurred."
  }
}

Common pitfalls​

  • Missing valid sender domain and failing SPF/DMARC checks.
  • Sending high-volume notification bursts without throttling.
  • Not handling partial recipient failures in error flow.