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Ketch and Postmark

Fulfill deletion requests against transactional email data, using an API that has to be turned on by Postmark's own support team first.

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Postmark Integration Documentation
Postmark

About Postmark

Postmark specializes in transactional email delivery, tracking activity data alongside recipient records to support its deliverability guarantees. Deletion against that combined recipient-and-activity data runs through Postmark's Data Removal API specifically, a capability that isn't enabled by default and needs a request to Postmark support before this integration can function.

Ketch connects to Postmark through that API once it's been enabled.

Capabilities

How Ketch works with Postmark

The Ketch Postmark integration covers Rights Orchestration, specifically Right to Deletion.Connection uses three credentials: the requester's email (the Postmark account owner), an Account API token, and a Server API token, since deletion is scoped to a specific server within the account.

Rights Orchestration

Deletion erases recipient data from a specific account and also erases the activity associated with that recipient, not just their contact record. This integration requires access to Postmark's Data Removal API, which Postmark support has to enable for the account before it will work; it isn't available by default.

With Ketch, teams can

  • Fulfill Right to Delete requests that remove both recipient data and associated activity together
  • Know upfront that Postmark's Data Removal API needs to be enabled by Postmark support before this integration functions
  • Scope deletion to a specific server, matching Postmark's own account structure

The gap

The problem this integration solves

Transactional email data spans both recipient records and activity history, and the API needed to reach both isn't turned on by default:

01. Attempting to connect before Postmark support has enabled the Data Removal API will fail, and it's better to know that requirement upfront than discover it as a setup blocker

02. A deletion that only removes a recipient's contact record, without associated activity, leaves data behind in exactly the tracking data Postmark's deliverability features depend on

03. Manually requesting recipient deletion from Postmark for every request doesn't scale

Ketch resolves the third by giving Postmark a structured, repeatable deletion path, and flags the API-enablement requirement clearly so it's arranged before setup rather than discovered as a failure.

Why Ketch

Why teams choose Ketch for Postmark privacy compliance

Permissioning infrastructure that governs Postmark the same way it governs every other system in your stack — not a one-off connector bolted onto a banner.

  • Deletion that reaches activity data, not just contacts

    Recipient data and associated activity are erased together in one action.

  • Upfront about the API enablement requirement

    Teams know to request Data Removal API access from Postmark support before setup, rather than hitting a wall mid-configuration.

  • Backed by enforcement precedent

    The California Attorney General reached a $1.55 million settlement with Healthline Media over sharing sensitive data with advertisers without valid consent, a reminder that transactional email platforms holding activity and tracking data carry real exposure when deletion isn't genuinely complete.

Questions about the Postmark integration

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