Hello,

Yes, you can do these things in Xeams. My answers below are numbered according to your original questions.

1. Use the "Catch All" feature. Check https://www.xeams.com/catch-all.htm for detals
2. You can run external processes upon receiving emails. Check https://www.xeams.com/external-tool.htm for details. This page discusses calling Microsoft Defender, but you can call any custom application.
3. There are two ways to do that:
   1. Specify the "Retention Days" to 1 for every category. This will delete the file after 1 day, which is recommended when testing to ensure everything is working fine
   2. Configure the score for the External Tool Filter to assign a value higher than the deletion threshold. This will cause the message to be deleted right away.

Run Xeams in "Stand-alone".