Today Amazon announced a new tool for Amazon Simple Email Service called Mailbox Simulator.
When using Mailbox Simulator, neither your quota for sending letters, nor your bounce rate is affected (do you really understand how to correctly translate - the percentage of failures?).
Amazon suggests using Mailbox Simulator when you need to:
Test your application without sending a letter to anyone.
Test how your email program processes failures, complaints, and automatic answers “Not in the office now”.
See what happens when you send an email to an address on the Amazon SES blacklist.
Generate a failure without adding the addressee to the black list.
Determine the bandwidth of your system without using the daily quota for sending letters.
Send test letters without affecting your options for rejections and complaints.
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Actually, this is a kind of sandbox for testing scripts / applications for sending letters, to teach them how to react to refusals / complaints, etc., without sending a letter.
For different cases (refusal or complaint against spam) there is a separate box for testing. They can be found in the documentation. By the way, the letters sent to the simulator addresses for testing are paid, just like regular letters.