Thunderbird Community Forum

My smtp account settings are correct yet anything sent is returned. When I go to my webmail account, I have no problem with sending anything. Does tbird have a different setting for SMTO?

I am using 64bit Windows 11 Home. This happened suddenly without any changes on my part that I know of.

Thunderbird suddenly started freezeing right after startup. The only thing I can do is login with the master password then the regular thunderbird screen opens, but I cannot click on anything. Soon after the screen is greyed out. However I can close the program down with the red "x" in the top right corner. It opens a dialog that gives me the opens to close down or wait to respond. The close option works.

The only hint I can see from the frozen screen is that the local Folder seems to have a problem as a subfolder has now multiple copies of itself. It seems to create a new copy of that subfolder every time I try to start the program.

So far I tried reinstalling/updating TB, as I assumed an update had maybe malfunctioned, (it was stuck on version 128, since I could not open TB for about a week now) but upgrading to to version 138 did not help. I also tried starting TB in troubleshoot mode, which made no difference I also tried starting TB while windows was in safe mode, which made no difference.

I read around but people that have problems with TB freezing seem to not have the freeze happen before they can do anything.

I assume something is wrong in my profile, maybe the local folder? But I have no idea to fix anything, since I cannot do anything at all in TB.

Any help would be appreciated! Thanks!

I exported Outlook Contacts to a .csv file and imported giberish to the Thunderbird Personal Address book. Can the giberish be block deleted? How should the Outlook Contacts be transferred to Thunderbird? Secondly, I exported Outlook Contacts to gmail and have used them on the web based gmail app to send messages. Don't remeber how the gmail contacts got to the Thunderbird Address book, but they don't work. The first message I sent from Thunderbird from my wife's gmail address to my hotmail address produced the following error:

Sending of the message failed. An error occurred while sending mail. The mail server responded: The recipient address <Steve Thompson (sthompson2486@hotmail.com> is not a valid RFC 5321 address. For more information, go to

https://support.google.com/a/answer/3221692 and review RFC 5321

specifications. 00721157ae682-70ca8508772sm13401897b3.82 - gsmtp. Please check the message recipient ""Steve Thompson (sthompson2486"@hotmail.com" and try again.

Both imported address books are unuseable. Please help.

Hello! The past two days, probably since the 128.10.1eser (64-bit) version, I have access to the local folders, I can see the list of the e-mail on them, but the e-mail open a white empty page and there is also no preview. I tried to install from scratch the 138.0.1 version, but the same problem appeared. Thanks in advance for your help.

How do I save my open tabs while compacting my inbox? They all disappear after compacting. I am trying to move my open tabs over to a different folder to preserve them, but I can't figure out how to do it.

When I choose an open tab from my Inbox to move it to a different folder, the folder choices on the left side of the interface go away. I there a way to move between folders? Drag /drop?

Chris

Not sure if this is the right category but I am using Linux and Thunderbird 128

I am trying to sync my icloud calendar, so have gone to add a new calendar. Chose network and put in my icloud email and password but it just keeps saying credentials aren't accepted even though they are correct.

Am I doing it correctly or is there something else I need to do?

Thank you

HI I am having a nightmare. Updated windows last night before i went to bed, started the PC this morning and thunderbird wont connect to my mail server....So i cannot send or receive emails.

i have been going round in circles for the last three hours searching help articles, but none of them are helping.

i checked the update history and apparently thunderbird was updated last night. But i cannot find a way to remove the update.

i have tried trouble shooting mode, but there is no actual trouble shooting to be done there, just a page full of jargon i dont understand.

I have tried removing and reinstalling thunderbird, thinking that i would need to add my accounts again and that would detect the right settings. But upon reinstalling it opens with the accounts and settings stil in place, so if there is a setting causing the problem, then its being transferred to the new install.

at one stage i clicked on the "repair folder" button in account settings, and that instantly removed all of my emails from the inbox, so i have lost all my emails (which i really need)

I have installed outook, and that talks to the server without any problem. So i tried to import the settings from outlook, but thunderbird tells me that it cannot find an outlook account to import from.

I have tried turning of defender, still dont work

I have no idea what else to try, so i am at the end of my tether with it.

I have copied the text from the trouble shooting page, just in case it makes any sense to anyone....but i dont want to post it here because i am not sure if tere is anything in there that puts me at risk if i post it?

Suddenly the inbox is no longer displayed.

I am very troubled.

I am receiving new messages, but they are not showing up.

I need to have it repaired ASAP.

Good morning, TB is not doing good at all. Lots of problems with messages being erased, folders not opening.

I have a sent.sdb folder in my TB mail profile which does not show up when I open TB. This is extremely annoying. What should I do? Thanks.

Thunderbird has been working fine, but two days ago IMAP started timing out and won't connect, and we just tried sending a test outgoing message but SMTP now won't connect either. We have not changed any settings, and we've tried closing and re-opening Tbird but no effect. Thanks for any ideas.

Every time I run Thunderbird, it appears to lose its IMAP connection(s) after 10-15 minutes. I've tried varying the number of cached connections from 1 to 10 with no difference in behavior.

Restarting Thunderbird will restore connectivity temporarily, until the entire process starts over again.

It seems to be correlated to saving a copy of sent messages. The sending process times out while the message is being saved to the Sent folder after the SMTP sending is complete.

Once this happens, new mail doesn't appear, moving mail between folders has no effect, and some (but not all) messages can't be retrieved from the server.

message filters only work sometimes. when i click on run now nothing happens. sometimes this works, sometimes i have to walk away and come back, but right now nothing works. i compacted folders, updated firefox, waited, and waited, nothing.

I've been using Thunderbird for decades. I have Thunderbird set to automatically download messages every 5 minutes. Platform: Computer Win11 Home, Thunderbird 128.10.0esr (64-bit), POP3 connection (also with IMAP connection on a MacOS computer.

But a new issue is now occurring. Every so often now, I realize I haven't received any new email downloads in some time. I click on the Get Messages button (or right-click and select items individually), but nothing happens - no "Host Contacted..." message in the Status Bar. It's like the Get Messages function is completely disabled. It is only when I quit then restart Thunderbird does it successfully establish a connection and download the many queued emails.

Please let me know if this is a known bug, or if there is a way to submit this as a bug. Also let me know of any other information you would need in order to help debug this issue. Thanks!

I get an error when I try to open Mozilla Thunderbird "The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detail.

Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.gmail.com timed out. Try again. Claude Hamel landbaron52@gmail.com

Hi,

I've created a backup file from Outlook which is 17GB with my old emails. I can't find an easy way to import this pst to Thunderbird 137.0.2.

When I go for the optio "Import from Outlook": a) I instantly get an error that a trojan virus is somewhere in my PC and b) it stucks to 33% forever and after a while Thunderbird crashes.

Is there any workaround? Thank you Ev

I have a computer with a 5800X3D, 64 GiB Ram, Samsung 980 Pro M2 SSD, Windows 10 64 Bit with Thunderbird 138.0 (64-bit).

I changed to MailDir format because I have over 250.000 emails and the mbox format was very, very slow. I save all emails to the SSD to not have to check them again.

It works, but Thunderbird regularly freezes for around 1–2 minutes and isn't reactive anymore. The Task Manager shows that one core is used completely.

Can you look into the Thunderbird behavior if more than 200k emails are present? Thunderbird is fine if you just have a few emails. Maybe you can pre-cache it and/or use more than one core?

I cannot upgrade much more on the hardware front. Might be an even faster SSD, but then the vertical scaling would hit a wall.