(1) Is there some way to disable the manual compaction button that shows in the menu when you right-click on a folder? I've accidentally hit that button a few times, and it created a problem for me (it tied up the computer for a few minutes at a very bad time). I use the "Mark Folder Read" selection all the time due to the traffic on a couple of servers I subscribe to - most of the messages don't have anything to do with what I do, and aren't something I'm interested in reading. It's frustrating to try to mark all the messages read in one of the folders and hit the wrong selection - compaction (this is caused by neurological problems). The "compaction" button never gets deliberately used... and I'd like to set some sort of buffer zone around the button I use every day ("Mark Folder Read"). (2) Is there some way to FORCE Thunderbird to compact folders only once a week (or less), maybe on a specific day? NOTE: I don't want nags about the importance of compaction; I understand that. The problem is, I keep getting messages about compacting folders - Thunderbird seems to be compacting the folders multiple times a day - and when it does, that seems to slow things down. My computer is adequately fast (quad processors at 3.4 gHz, 16gb ram, 1Tb HD), running Ubuntu 14.04LTS (I don't want to upgrade until my research and dissertation are finished), Thunderbird version 52.9.1 64 bit, Firefox version 61.0.1 64 bit. I have Thunderbird and Firefox running in a separate workspace pretty much all day, in case I need them (i.e., I get an important message from my professor or others or need to look something up) - the problems with compaction pop up 2-10 times a day (no pattern detected as of yet). There doesn't seem to be any connection between these issues and the number of programs or windows I have open, for instance in other workspaces. Thanks for any help!