Thunderbird Community Forum

Not sure where/how to post this, so starting here (and happy to move/amend this posting as appropriate.) 15-Oct-2026

Background: I've got a yahoo ("free") email account for many years, and wish to move the current contents of my Inbox to a folder (on imap, not local). Recently yahoo appears to have moved to "cloud" arrangement internally (not sure, but it appears to be the case.) The problem I'm experiencing (below) I believe may be yahoo's back-end cloud processes getting out of sync with Thunderbird's view of the same activity. Therefore, I'm seeking help on how to accomplish this (=I don't think there is a bug in Thunderbird, rather this is a plea for how to manage yahoo's email service for my account.)

Symptom: Moving large number of emails between folders both hosted on yahoo, peers to my inbox on yahoo, using imap - the "export" imap service). Thunderbird says it completes the task, but many (not all) of the moved emails re-appear in yahoo's inbox after a short time, so this makes moving a large (more than a few hundred) emails a *very* laborious process.

What I'm trying to do: I wish to move my current inbox (has about 7.5K messages) to an IMAP-hosted folder (same account, etc.,yahoo email would see this folder as a peer to inbox). When I select all of the messages on inbox and tell Thunderbird to move these to the local folder, thunderbird appears to indicate the task was completed. If I move a very small number of emails at a time, that does complete successfully (=thunderbird says task completed, and the moved emails do not re-appear in yahoo inbox.)

Thanks for looking at this (long) posting and (particular to moderators) if I've posted this incorrectly or in wrong place, please assist!

Dave

I have been using Thunderbird for years. Suddenly, a couple of days ago, the sent and trash folders no longer show the emails in them. When I use Roundcube online, these files show up there as normal.

I have done considerable research online to solve this problem to no avail. Using AI, they suggest a number of things that I have tried, without solving the problem. Apparently, this is somewhat common. I finally got to deleting the send.msf and trash .msf. This did nothing to solve the problem.

This is very frustrating. What can I try next? I am using Win 11 and Version 152.

Carl

My address books have disappeared from Thunderbird I had the usual Personal and connected lists plus a couple of named lists. I was told that they were probably still available MY Profile and if I asked Thunderbird to import them as an SQlite file I'd get them back. It hasn't worked. How do I do it?

In previous versions of Firefox it was easy to create a filter. Not anymore. I want to allow trusted addresses to come into my Inbox without going into Spam. Even when I follow (Google's AI) instructions exactly, all my medical information goes to Spam AND the trusted filter I created seems to have blocked dozens of browser choices in DIY sites, among others.

There is (of all things!) almost too much information to process about using Firefox's email, messaging, and security options. It seems there is no longer a dedicated email application, and I cannot disentangle what I need to do to either move completely from gmail or mask my gmail account somehow through a maze of layers.

I'd like my Inbox appearance to be as it was before I updated to Windows 11. I find emails with Threads very confusing and time consuming and slows my performance. I prefer the simplicity of original Inbox way of showing incoming mail and NO threading. Can you help please?

Topic: My ignorance! Working side by side with my bank account 1/2 size, and 2 columns of my inbox screen 1/2 size worked great! A job well done! Re-sizing TB screen back to normal size caused a large blank screen, headed "Inbox", with only a couple of blank columns, no folders, no Sent, no Trash, and it is unresponsive. I went out and back in and it is the same. I didn't do anything unusual. This is a fairly routine action. Please can you help?

Back in April I was hacked, on my 2012 Acer Desktop (WIndows 10) ,with a (RAT) remote access trojan, and the hacker screwed up my computer & changed my passwords. (Messed up my life bigtime--Creditcards, bank account, etc. I had Thunderbird and don't want to lose my e-mails. I finally got another laptop computer(Windows 11) & want to use Thunderbird there also. with same e-mail & password Just today I finally was able to get a new password for my ISP- windstream.net. How do I go about getting my password changed as I am unsure of what the hacker did. I really don't want to start over from scratch. My e-mail address is labman1@windstream.net. I don't really want to start a whole new account or entity. What do I do to go about changing the password? HELP !!!!

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E-Mail messages are in Xfinity, but do not come to Mozilla Thunderbird. Not having access to Mozilla email, prevents messages to be sent from Xfinity. I also cannot send messages from web sites. brucelowrey@comcast.net