The Postmark module allows the administrator to switch the standard SMTP library over to use the third party Postmark API to send out emails from their site. An account with Postmark is required to use this module.
Installation
8.x version of the module requires installation via composer
Configuration
- Configure the Mail System (
admin/config/system/mailsystem) Formatter and Sender so that all modules use Postmark to send email. Alternatively, you can configure it so some modules use other mail modules or the default Drupal mail handler if you'd like. For example, if you don't like the way the Contact module is handled, you can set things up so Contact module
emails are sent by the regular Drupal mail handler. - Go to Configuration > Postmark (
admin/config/mail/postmark). - Enable Postmark functionality and add your API key from your Postmark account. You can get an API key from https://postmarkapp.com/
- The test functionality enables you to test the integration is working, this
will use a credit by default each time you submit an email address. - The email address that emails are sent from on your site must have a valid
Sender Signature set up in your Postmark account. Different modules use
different settings for the "From" address. One important place to check is
the address on Configuration > Site information. - Emails sent by the core Contact module use the sender email as the Reply To address, and will append the sender's email address to the bottom of the email so the recipient can see who submitted the Contact form. This is necessary
when using Postmark, as all emails must be sent from a sender defined by a
Sender Signature. The "From" email address is the address defined by the
setting on Configuration > Site information.
If you have any requests or problems using the module, please submit an issue in the Postmark queue (http://drupal.org/project/issues/postmark).
Sender Signature Requirement
The Postmark service requires that the "from" email address be registered with them as a Sender Signature. This will normally be your Site Information email address. More information is available here.
Sponsors
Module development is sponsored by SiteBasin (http://sitebasin.com). The Drupal 6 version of the module was sponsored by Deeson Online (http://www.deeson.co.uk/online).
Project information
Minimally maintained
Maintainers monitor issues, but fast responses are not guaranteed.Maintenance fixes only
Considered feature-complete by its maintainers.- Project categories: Integrations
657 sites report using this module
- Created by heylookalive on , updated
Stable releases for this project are covered by the security advisory policy.
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Releases
Development version: 8.x-1.x-dev updated 11 May 2026 at 08:07 UTC




