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Feature announcement: Custom metadata for your emails

We know that sometimes you need to keep track of each email not just as it flows through Postmark, but outside of it as well. We also know that you can’t always rely only on the Postmark-generated Message ID to accomplish this — you need a way to set your own unique IDs on a per-message basis. So we've added an option for you to specify custom metadata for individual emails.

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Reacting to Gmail reputation-based bounces

We’ve all been there—that message you’ve been waiting for is finally found in the depths a Gmail spam folder. It seems like the most you can do is move it to the inbox, “report as NOT spam”, and chuck it up to bad luck. It’s just one message, right?

But what do you do if your message is rejected by Gmail entirely, actually blocked on the first connection to Gmail’s servers?

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From , the team behind Postmark


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