Have you ever wanted to see how quickly you can send multiple messages through SendGrid, but you were concerned about how it would affect your reputation? Worry no more!
We have configured a special domain for any users who are interested in testing out SendGrid's relay speeds at higher volumes without it negatively impacting your reputation. You can send your test messages to any address @sink.sendgrid.net while still using our standard integration practices. All messages to this domain are accepted for delivery and then immediately deleted. Sending to this domain will not contribute to the IP warmup process if you have an account with a dedicated IP address.
If you are looking to test your API integration, you can enable the
sandbox_mode in the
mail_settings parameters of our Mail Send API. This will allow you to validate each parameter you include, and the structure of your JSON payload, all without actually sending a message.
sandbox_mode is not available for other endpoints, only
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