Rated 5 out of 5 stars

I was looking for this functionality (as a filter action) and found no other extension that can do it. However, it's not trivial even with this one. I post my solution here, maybe someone need it, too. I had to use a JavaScript action, with the following script:
/* delete skip trash */
let hdr = msgHdrs.queryElementAt(0, Ci.nsIMsgDBHdr);
hdr.folder.deleteMessages(msgHdrs, msgWindow, true, false, null, false);
Maybe I should have posted it to FiltaQuilla's forum, but if someone looks for an extension with this functionality, won't get to that forum.
This JavaScript-action feature makes this add-on really powerful. Even if you don't have knowledge of JavaScript and Mozilla components, you can go to FiltaQuilla's forum and ask for help! This makes this add-on even greater.

This review is for a previous version of the add-on (1.1.0).