u/SpareSimian

I want to create a folder "_Other" to hold unclassifed mail until I get enough to create a special folder for it. The leading underscore should cause it to sort to the start of the folder list. I try to keep Inbox empty. Thunderbird won't let me use this folder name. The Create button on the New Folder dialog stays greyed out. I'm able to do it with other clients. (I have the ancient Mulberry client as a backup.) I was able to create "-Other" with Tbird but it doesn't show up in the Tbird folder list. (Looking on the server from a shell login, I see Maildir/.-Other.)

This experiment suggests that Tbird treats certain leading characters in folder names as special. What are the hidden rules here?

SOLVED: PEBCAK. I failed to see the existing "_Other" folder sorted beneath the predefined folders like Inbox, Drafts, Sent, and Junk. I'd initially typed "Other" and then added the underscore and that's when Tbird greyed out the proposed new folder name. I misdiagnosed that as a special character, not a refusal to create an existing folder.

I walked to my elementary school in the 60s. The only time my mom would drive me was when we got a rare torrential rain or when I had a medical appointment. It amazes me how parents queue up at the schools now, jockeying for position.

I do understand it at a rural school where there are no sidewalks and the cars drive down the narrow roads like maniacs. I do my best to avoid those areas during the hours when kids are arriving or leaving and the streets are impassable with queued parents.