Thunderbird Support Forum

I've been using Thunderbird for years and have never had this problem. Since the upgrade today, after I run Thunderbird once and close it I can no longer start it up again. I have to reboot or use Task Manager to kill it in order to run it. This is on Windows 11. Please help - not an acceptable workaround for long. Optionally, how do I downgrade to previous version? I should know better than allow automatic upgrades.

Adding a couple images below, when it has started successfully it shows as one of the Apps in Task Manager. When I close it, Thunderbird drops into the Background Processes but doesn't end. I have to kill it here in order to start it again.

I'm using Thunderbird 115.8.1 (64-bit) on Windows 10 with IMAP, a gmail account, all folders are set to sync offline.

Two days ago someone sent me a message with a couple of attachments, I read it, it was downloaded ok.

Today, working offline, I try to read the same message and I get "The Body of this message has not been downloaded for offline use".

Searching for this problem online is insanely frustrating as there appears to be an infinite number of explanations online telling me how to get the message body downloaded. It WAS downloaded, I was looking at it two days ago! This has been a common problem in Thunderbird for me for several years now. Messages are downloaded, read, I go offline, they are still there ok, then a few days later they mysteriously say "The Body of this message has not been downloaded for offline use".

Fragments of the message bodies appear in search results, even at the same time as trying to read the messages gives me "The Body of this message has not been downloaded for offline use." It's in there somewhere, I can even find the entire message body by searching the data files in the profile folder, but Thunderbird THINKS it's not downloaded.

I need to work offline a lot, and any help would be very much appreciated.

Thank you for your time.

Some time ago, two of the folders in my Inbox have had their icons changed to the same icon used for Drafts. I cannot figure out how to get their icons back to the typical Folder icon and these two folders cannot be moved in the list of folders to rearrange their order. Please help.

Suddenly I can not receive my emails on Thunderbird. They do show up on my cell phone. When I send an email, I get the following, "Your message was sent, but a copy was not placed in your Sent folder due to network or file access errors. What can I do?? Ed PS I will get your email response on my cell phone, thank you.

HI,

I am trying to get my email message list to have the same vertical view as I did with Outlook instead of the spread-out view that Thunderbird uses as default. I wanted this compact so I can view the message in a larger window in vertical view. I have a screenshot with two examples. The top portionos Thunderbird and the bottom is Windows Mail (I didn't use Outlook as I uninstalled it, but the format is nearly the same view in WM). To read the subect/sender I have to drag that column to the left to see the contents and it's off-putting. The left column in WM with message windos is the view I want.

Thnx, Tom

Since Verizon switched to AOL I have had email problems. I have two verizon.net addresses and one tampabay.rr.com. After finding help in the forum for creating a temporary app password I have been able to send Verizon email but not receive. The tampabay.rr.com works for sending and receiving. I have tried multiple times to fix but one of two things happen: dialog box says "sending email" but doesn't complete, or it continues to ask for a new password. AOL web mail works fine. Any help will be greatly appreciated.

Dell laptop recently updated to windows 11, Thundebird 91.7.0 (64-bit).

why when setting up gmail account, do I get a message "error Incoming server already exists."? It seems since updating to TB 91.7.0 (32-bit) one of my gmail accounts stopped getting emails, I still get them on my smart phone and on an older pc that has TB 78.14.0 (32-bit) but not on my primary pc. so since the primary was set to pop and the older pc was imap I tried switching it to imap but couldn't so I deleted the account and reset it up but after entering everything I keep getting that error! TIA Tom

I'm doing some Mailmerges and use the "send later" option. But although I can see the messages in the Outbox, the "Send Unsent Messages" option is greyed out. Also, if I restart Thunderbird, a dialog pops up asking me whether I want to send unsent messages, I click "Send now", but nothing happens; the unsent messages remain in the Outbox. The same thing happens if I create a message and use the "Send later" option. Any idea how I can fix this? It's only just started happening; previously, this feature worked just fine.

I have one message filter (for the Spam folder) with 50 rules to delete known repeat offenders from the Spam folder. The filter doesn't seem to work at all, even if I try to run the filter manually. Why won't this filter work?

I was prompted to 'compact' my mailboxes, which I did many times before and had no issues.

Today, after compacting, I realised that my whole work inbox is empty! I have alot of important work emails. How can I retrieve them back?

It is not in the trash either, I have checked every possible folder.

Help!

When I tried to open my email this morning everything was gone!! No folders, no inbox, no contacts NOTHING. Then it started down loading messages from six years ago. What is going on? As of right now I HAVE LOST EVERYTHING! HELP!!!!!

Thunderbird 91.7.0 (64-bit), Windows 10. Brand-new profile: Thunderbird just reinstalled after uninstalling previous version and deleting all profiles (in Windows' "Roaming" user folders etc).

For some emails containing links, clicking on the link open in my default system browser: Firefox.

For some emails, instead, clicking on a link opens it in a new Thunderbird tab instead of Firefox.

Example of the first behaviour is an email from Google Scholar. Example of the second is an email from a flight company.

In either case, when I hover over the link with the mouse I see the address "https://..." etc in the status bar.

Expected behaviour: all web links should open in default browser.

Any ideas of why this strange inconsistent behaviour and how to correct it? Cheers!

I'm only seeing the first email in a conversation if I look in the email inbox. I can see the conversation in the search results if I search for a string contained within the email. But if I just look at my emails in the inbox it looks like I never replied to the email and that she never replied to my reply.

I get this message: Secure connection failed

         start.thunderbird.net uses an invalid security certificate.

The certificate is not trusted because the issuer certificate has expired.

(Error code: sec_error_expired_issuer_certificate)

How do I fix it? Thanks, Susie

Every time I use TB now it asks me to compact (delete) my trash. I want to keep my trash. I don't want to move it but I do want to keep it. How can I turn off this super-annoying continual pop-up?

Having trouble with Thunderbird version 84.0b3 (32 bit)

I have done some house keeping and reduced a number of email accounts and local folders dramatically e.g. one local folder from 1626MB to 88MB.

When I look at size for the local folder it says 18 messages (correct) but 1626MB. If I select all 18 a message says "These messages take up 88.7 MB."

This is confirmed by rerunning MozBackup where after deletion of 15))MB+ messages it still shows the same size .pcv file.

Why is Thunderbird still holding over 1500MB of non-existent messages.

Any advice please?