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API keys authenticate machine-to-machine calls for MailerPath event sending. Use a key for server-side requests only, keep it out of browser code, and rotate it whenever access changes.

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Create a key

  1. Open Settings.
  2. Go to API keys.
  3. Create a new key with a clear label.
  4. Enable the key for event sending.
  5. Store the key in a secrets manager.

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Good key habits

  • Use separate keys for staging and production.
  • Scope keys as tightly as possible.
  • Rotate keys on a schedule.
  • Revoke keys when a service or teammate no longer needs access.

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How MailerPath uses the key

  • Authenticates the event request.
  • Matches the event to the correct contact.
  • Feeds tags, workflows, and analytics.
  • Keeps event traffic tied to a trusted source.