First off, make sure you have created an account with Postmark.
At this moment, sending bulk email with Postmark is in beta. Before using Mailcoach to send out mails with Postmark, contact their support to enable this on your account.
At Postmark you must configure a new webhook.
The webhook should be sent to
You should add a custom header named
mailcoach-signature, and you can choose a value that you should keep secret. You must turn on the
Spam Complaint and
On the settings screen in Postmark, you should also enable open and link tracking.
On the Mail configuration settings screen in Mailcoach, you'll have to have to fill in these settings.
- Mails per second: to not overwhelm Postmark with mail requests, send this to a sensible value. In many cases
10 will be sufficient
- Server token: you can get the right value on the Postmark account details screen
- Signing secret: this should be set to the value you specified for the
- Message stream (optional): the Postmark Broadcast message stream
Using Postmark for bulk mail is currently in beta. Before start sending campaigns via Postmark we highly recommend getting in touch with their support and let them know you want to start sending bulk emails.