product · inferred from evidence
X-PM-Message-Id
A custom header used by Postmark to store the message ID in delivered emails.
- How to get the Postmark message ID after sending with postmark-rails
Postmark returns a message ID after accepting an email, which is needed for delivery tracking (sent, bounced, etc.). With postmark-rails, calling `UserMailer.welcome(@user).deliver_now` does not obviously expose the Postmark message ID on t