topic Re: Trouble moving messages to certain local mailboxes in Thunderbird in Discussions

Trouble moving messages to certain local mailboxes in Thunderbird

BG42 — Sat, 13 Jun 2026 20:01:00 GMT

It's very odd. Normally moving an email, say from the Inbox to the relevant year's archive, takes "no time at all".

Which is true for all the mailboxes shown on the attached screenshot, EXCEPT for the four at the bottom. Moving even one message from Inbox to Yiddish can take ten seconds or longer (with the dreaded "Not Responding" occasionally). Moving something in the opposite direction is also screwy, only from those four.

I had thought that it was because they're rather large. This first started when there were just Yiddish and MSW, and I split off most of the earlier years into the archives shown. To no avail.

It's only an annoyance, but I'm puzzled about how such a thing could happen.

Re: Trouble moving messages to certain local mailboxes in Thunderbird

siffemcon — Sat, 13 Jun 2026 20:46:08 GMT

Try R. click one of the four folders > Properties > click 'Repair folder' button. Then R. click folder > Compact. Repeat for the other three folders

Re: Trouble moving messages to certain local mailboxes in Thunderbird

BG42 — Sat, 13 Jun 2026 21:39:13 GMT

Good idea (who knew), but the situation's the same.

Re: Trouble moving messages to certain local mailboxes in Thunderbird

wsm — Sun, 14 Jun 2026 11:05:14 GMT

Problem support is best provided at https://support.mozilla.org/en-US/questions/new/thunderbird