Supposedly, according to this article: https://support.mozilla.org/en-US/kb/thunderbird-and-gmail#w_archiving-messages , I should be able to set Archiving to simply "All Mail" so that it matches Gmail's way of archiving (ie, just has zero labels). However, that option doesn't show up for me. I can't even force it by selecting 'All Mail' as an IMAP folder as its not listed as being available to subscribe to. I've checked my Gmail settings on the web and IMAP is enabled and there isn't anything further to set. I'd like "Archive" to work like Archive in Gmail. And not that i'm entirely considering it, why can't I subscribe to "All Mail" if I wanted (so i could theoretically search all mail locally, etc). I've attached a screenshot of what Mozilla says I should set Archive to, but I simply can't find "All Mail".