Kartra Documentation Technical Documentation for Kartra


PostMark integration will require a API key from PostMark to integrate into Kartra.

*Please Note: This means most issues will need to be solved via PostMark and PostMark support.

Upon selecting the PostMark tab within the email gateway model window you will be presented with the following.

Postmark 02


You will need to login to PostMark on a separate tab and collect the key from the API options within PostMark.

After logging into PostMark, select the server you wish to use, and then select the Credentials tab within the menu options.

Postmark 01


*Please Note: PostMark may change their website from what appears in this document; but there should still be an API section with the key information.

Meanwhile on the original tab with Kartra, you will need to copy the “API Key” into the modal window.  At this point the create option will enabled. By selecting create you can now finish your PostMark email gateway integration.

If you are unable to find the “API Key” on PostMark or have issues with utilizing the webhook on PostMark, please contact PostMark support.

If your PostMark API Key does not work via Kartra, please contact Kartra support.


*Important Note: What about message streams?

If you were informed by PostMark support that there is an issue with your Kartra setup due to a lack of message streams in our integration, then we want to clarify that Kartra is in fact using message streams contrary to what they may have said. This is a simple misunderstanding as our documentation above does not mention message streams on purpose.

Under most situations with third party programs such as ours, the user (such as yourself) will be the one clarifying what a message contains and hence would need to input the message stream details within an integration to PostMark.

Kartra however does not need to do this because we separate all the different types of emails within our system interface already. Such as purchases, broadcasts, notifications, and etc. So we have already identified which streams need to go to which emails and automatically handle it on the back end so our users do not need to worry about it.

So if PostMark support says Kartra is the cause of your issue due to lack of a “message stream”, please direct them to this documentation or support team (support@kartra.com) to clarify that we do in fact have message streams and they should be unique to each type of email and content coming from your account based on their contents.

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