API
Add a suppressed address
Stop sending to an address, by hand.
POSTapi.openemail.uk/suppressions
Runs the real call against your workspace, with your own key.
POST /suppressions
Stop sending to an address, by hand.
Example
Needs settings:write. Answers 201 with the new row, or 200 with the row already there when the address was on the list, whatever its reason. A new entry fires suppression.added.
curl -X POST "$OE/suppressions" -H "$AUTH" -H "Content-Type: application/json" \ -d '{ "email": "[email protected]" }'{ "object": "suppression", "id": "c40a95f2-1cc6-4d31-82a8-9e075d31c2a8", "email": "[email protected]", "reason": "manual", "detail": null, "removable": true, "createdAt": "2026-09-23T10:02:17.000Z"}A key limited to particular addresses or domains is refused with 422 capability_unsupported, and so is an app connected by anybody but the owner: the list stops mail from every address in the workspace.