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How do I know if HTTP POST callbacks are coming from Mailgun, and not forged?

Mailgun allows you to check the authenticity of its requests by providing three additional parameters in every HTTP POST request it makes.

Please take a look at our webhooks documentation for more information.

Got Questions?

Sinch Mailgun has answers! If you have any concerns or questions, please send us a Support ticket using the Support page within your Mailgun Control Panel.  Our Support Team will be happy to assist!