Using Postmark for outgoing mail (SMTP)

Add a mail transport for delivering outgoing mail through Postmark.

Navigate to Search » Mail Transports » (+)

Click the Save Changes button.

Preserving message ID headers

By default, Postmark replaces the Message-Id: header on outgoing email. This breaks reply threading in Cerb.

This workflow adds the X-PM-KeepId: true header to outgoing mail.

As an administrator, navigate to Search » Workflows » (+) » (Empty) and paste the following template:

workflow:
  name: cerb.integrations.postmark
  version: 2024-11-27T20:22:16Z
  description: Add the `X-PM-KeepId:` header to outgoing mail when using Postmark SMTP.
  website: https://cerb.ai/resources/workflows/
  requirements:
    cerb_version: >=11.0 <11.1
    cerb_plugins: cerberusweb.core, 
records:
  automation/automation_mailSend:
    fields:
      name: cerb.integrations.postmark.keepMessageId
      extension_id: cerb.trigger.mail.send
      description@text:
      script@raw:
        start:
          return:
            draft:
              params:
                headers:
                  X-PM-KeepId: true
  
  automation_event_listener/listener_mailSend:
    fields:
      name: Postmark
      event_name: mail.send
      priority@int: 100
      is_disabled: 0
      event_kata@raw:
        automation/keepId:
          uri: cerb:automation:cerb.integrations.postmark.keepMessageId