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Other ways to add addresses

API referenceSuppression

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From the Suppression API reference. Requests use the base URL https://app.warmerly.com/api/v1 and an API key, see Authentication.

  • Dashboard. Open Settings > Do not contact, paste addresses into Email addresses (one per line, or separated by commas; a pasted CSV column works) and click Add to do-not-contact. A toast reports how many were added, how many were already suppressed and how many were skipped as invalid.
  • AI assistants. The suppress_emails tool on the MCP server adds up to 500 addresses per call to the connected workspace, as manual. It stays available while a workspace is billing-locked, because it only ever stops mail.
  • Bulk import. There is no separate import endpoint. For a large list, split it into batches of up to 5,000 addresses and call POST /suppression once per batch. Re-sending a batch is safe because duplicates are counted as alreadyPresent.
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How suppression works with campaignsSuppression is workspace-wide, not per campaign or per project. An opt-out holds across every campaign and…The list is write-onlyPOST /suppression is the only customer-callable endpoint on this resource. Adding an address works with your…Add addressesRequires X-Api-Key. Not project-scoped. The list applies to a whole workspace, not a single project. The…