Specifically for the delete type "by key" or "by id" as outlined in the documentation: POST /contacts/v1/contacts/actions/delete?type=keys

Wasn't finding any specific documentation on the matter but maybe looking in the wrong spots.


The best method for mass deletion of contacts is by using the Delete by list reference method, which allows you to delete batches of up to a million records at a time:

When deleting from a sendable data extension, the call limits each process to one million rows.

You can read more about automating contact deletion in my answer to this question:

Trying to automate contact deletion with SSJS

  • This information and links are a gold mine -- thank you. Although I was looking specifically for the limitations on the REST call for deleting by KEY or ID, which was not clear in the question. I am looking for ongoing deletion (daily) and not mass deletion.
    – Daniel
    Jun 12 '21 at 15:04

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