AgentMail Delete API Key

Use this endpoint when you need to revoke access for a specific AgentMail API key, such as after a key is compromised, when rotating credentials, or when cleaning up unused keys. This is a targeted deletion by key ID and should be preferred over any bulk or account-level revocation when only a single key needs to be removed.

• API key not found — returns 404 if the provided api_key identifier does not exist
• Unauthorized — returns 401 if the caller lacks permission to delete API keys
• Already deleted — the key was previously removed; may return 404 or success depending on idempotency handling
• Invalid api_key format — returns 400 if the key identifier is malformed