evolution trash mail folder management

Hi, I was trying to find some info about how Evolution automatically purges the trash mail folder, but haven't found any actual details. The documentation is typically vague, barely saying anything further than what you can see in the configuration preference windows. I hate manuals which say things like "the delete button deletes the message." I can figure that out, I'm not a moron, but the person who thought that tiny bit of documentation (and no further information), was adequate documentation, clearly was. Rehashing the GUI with a couple of extra words is NOT instructional documentation. Specifically, in the preferences (Evolution Preferences, Mail Preferences section, General tab), you have a few options about emptying trash folders, under the Delete Mail heading.: On exit, every time Once per day Once per week Once per month Immediately, on folder leave The first and last are completely obvious how they work, the middle ones less so. On other mail clients, I've come across options for purging old mail depending on the age of the individual message (whether this be trash folders or any other folder). This makes sense, you might want to keep mail for 7 days (or whatever length), then purge it automatically. The (user-defined) old mail disappears, the newer mail remains. And Evolution does seem to offer purging options of that kind if you right-click on individual folders, open their properties, and delve into the archive tab (not where I'd expect to find deletion options). That *would* be assuming that the delete option does actually delete the message, rather than move it to the trash folder, but it does move it to the trash folder. Though, if you go to the trash folder, and set a similar purging option, it does actually delete the messages from the trash folder (at least it doesn't delete messages in the trash folder by sending them to the trash folder in an infinite loop). If you want to manage the trash folder by right-clicking on it, and setting some options, in a non-obvious place, you get reasonably understandable results. But if you decided to manage the trash folder by going through the main preferences, you have some oddball choices. And that may have been the only place you thought to set options about managing a trash folder, I know it was the only place that I looked for a very long time. The idea that on some unspecified time of day, day of week, or day in the month, all mail in a folder will disappear, whether its been there for 1 hour or 3 days, seems a particularly stupid way to do things. The concept of a trash folder is that there's the opportunity to undelete a message. You might set it for a week, so that the trash folder stays small, but you can get a message back tomorrow that you accidentally (or on purpose) deleted. But the list of options suggest that you could delete a message, and it could disappear within the next 5 minutes, since once per month could be in 5 minutes time. After that long ramble, my specific question: Has anyone discovered *when* the once per day/week/month purges occur? -- NB: All unexpected mail to my mailbox is automatically deleted. I will only get to see the messages that are posted to the list. The following system info data is generated fresh for each post: uname -rsvp Linux 6.1.14-100.fc36.x86_64 #1 SMP PREEMPT_DYNAMIC Sun Feb 26 00:31:11 UTC 2023 x86_64