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How do I authenticate?

Using WarmerlyFrequently asked questions

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One of the frequently asked questions.

An X-Api-Key header, plus X-Project-Id to say which project you are acting in.

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Which plan has API access?Agency.Are there rate limits?Yes, per endpoint group, and they are separate from your plan's monthly allowances.Can I get notified instead of polling?Yes - subscribe to outbound webhooks for mailbox health events.