Thunderbird Community Forum

I belong to a group which need to receive a report to the whole group on a regular basis. How do I do this? The Mozilla instructions don't seem to apply to Firebird and have instructions which don't work on Firefox version 115.18.0

I have no idea what happened to my Thunderbird. I think it might have been an update, because all of my folders are not where they were, everything in the folders are sorted by groups like today, or older. I noticed a bunch of my emails are now in folders marked as a Userfolder#. The emails it contains are those that normally should be in a properly named folder, only those named folders are grayed out. Another issue is that when i try to open an email, it opens it as if I want to reply to it. If I just want to read the email, I have to right click on the email and select open to read it. I have 2 spam folders, no idea why, nothing saves to my draft folder I found out today, I just dont know what happened! I dont think I did anything but I dont know now, as Im beginning to doubt myself. It's been this way for a few days.

I keep getting the following error when trying to download emails from yahoo.mail: Authentication failure while connecting to server pop.mail.yahoo.com Have hundreds of emails sitting in yahoo.mail that I need to load onto my desktop. Any help is appreciated!

Thunderbird 156 wanted to keep getting a response that my business associate's email account did not exist. I had to have the recipient contact me to get Thunderbird to successfully deliver the email I first sent and responded to. Is this not some Java bug to the domain?

I have been unable to send emails for two weeks. I continually get error messages such as "An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: EHLO requires valid address." Another message says to check the SMTP outgoing server settings. I am using Windows 10, which has worked for several years. My email server is mail.twc.com and Spectrum. I can send emails via my iPhone or via the Spectrum webmail, but not through Thunderbird. I have examined my SMTP settings several times and have tried various combinations of settings. None has worked. Spectrum has no help and refers me to you. Can you help? Thank you, Andrew Gurian

My local telephone company updated their webmail. Now I can't send or receive emails. I called support and they wanted me to change some outgoing , and incoming server settings. I can't find the incoming server, was able to change settings on outgoing server.

Hi, Will there ever be a functioning option to set up a primary password that aborts the start up if not provided with the correct password. Still in 2026, hitting cancel gives access to all already synced emails. Please, soon!

Hello fellow Thunderbirds,

I have been using Thunderbird for years and had thousands of emails in quite a few folders, with a shit-tonne of filters etc. My emails were running pretty well. I only use two addresses, but the folders help manage everything.

I just got a new computer last week. Prior to switching over to the new computer I read through the 'Export your Thunderbird Profile' help page, and the 'Move Thunderbird data to a new computer' pages. I've tried to follow all the info there (with a glitch, explained below).

I am using a Windows system and have gone from Win10 to Win11.

I have the following data:

• Mozilla Maintenance Service (in Program Files (x86) ).
• Mozilla Thunderbird (in Program Files (x86) )
• Thunderbird (In Users/Username/AppData/Local/Thunderbird) (Contains 'profile' and 'updates'

I tried to swap the above data into the same spots on the new computer, but alas, it's not working. I *may*, however, have fucked it up myself...

So... When I got the new computer, I immediately downloaded Firefox, but, alas, I entered my email's details before closing it down. It did download a few off the server, but only a day's worth (before I realised I screwed up).

As soon as I realised I'd mucked up, I uninstalled Thunderbird and deleted the files on the new computer (you know how when you download it doesn't always remove all the stuff, so I tried to do this).

I reinstalled Thunderbird, but closed it prior to loading the email addresses on (as instructed). I then transferred all the above data into the corresponding file areas on the new computer. However, everytime I try to run the program it just goes to the standard open screen (with the popup that prompts you to enter your email addresses and details into it - see image, below, in case I'm not explaining it right).

Anyway, I'd appreciate any help you might be able to give me as I'm desperate to get my emails running again and have access to all the saved emails which were in my system. Kindly. Larysa.

My T-bird is not receiving incoming messages in one E-mail account. How can I add back an IMAP server on an existing T-bird account after T-bird deleted the line with the saved password and IMAP server for that account? I tried to change the IMAP server address for an existing T-bird account, but T-bird and/or my ISP deleted the saved password and IMAP server line for that account in T-bird's Saved Passwords table, so T-bird cannot get incoming E-mails. The IMAP server address still exists in T-bird's Tools -> Account Settings -> Server Settings page, but NOT in the Tools -> Options -> Privacy & Security -> Passwords -> Saved Passwords table. I would like to add an/the IMAP server back to the account without deleting the account, and re-entering all of its settings again. I have not figured out how to do this.

As background, I recently migrated to Thunderbird and imported a very large number of e-mails. The issue, however, is in regard to a new e-mail that was downloaded yesterday.

The new e-mail was downloaded in a normal fashion, but when I went to look for the e-mail in the Inbox, it was no longer visible in the (although I had not moved it or deleted it).

Running a search on the sender's name finds the e-mail. It is in a thread of 6 or 7 e-mails. The search shows the e-mail is located in the Inbox, however a sort by sender name in the Inbox does not reveal the e-mail.

In the search result, I starred the e-mail (it is the only starred e-mail in my e-mail database), but a search of all my e-mail folders shows no starred e-mails at all.

I also went through all my folders and moved all e-mails into the "read" status, then found the lost e-mail using the search function and marked it as unread.

The Inbox folder shows that I have one unread e-mail in the folder, however when I filter for unread e-mails, the results are zero.

How can I change an IMAP server on an existing T-bird account after T-bird deleted the saved password and IMAP server for that account? I tried to change the IMAP server address for an existing T-bird account, but T-bird and/or my ISP deleted the saved password and IMAP server entry for that account, so T-bird cannot get incoming E-mails. I would like to add an/the IMAP server back to the account without deleting the account, adding all of its settings again, and waiting 6 hours for T-bird to re-download all of the most recent 10,000 messages in the Inbox and all of the 15,000 messages in other folders again. The SMTP server and its saved password are still in the Saved Passwords table.

Installed Thunderbird in August 26. Successfully added Outlook and Gmail accounts (send and receive)

On a roll I then tried to migrate from Plusnet to Greenby. Can successfully receive emails via IMAP.plus.net server. But could not send mails from Greenby (other accounts still OK)

Traced problem via forum query 31???? to inability to create a new SMTP server for outbound mail. After entering all data in the outbound server there is no response whatsoever to clicking add button (ie no error messages or servers added to SMTP list)

Then tried to delete the partially active Greenby account via clicking delete button in account setting window. No response. Account still present.

Does anyone have any suggestions to solve this before I try the doomsday action of deleting and reinstalling Thunderbird.

TIA Phil

I have recently closed my yahoo mail account, removed all traces from Thunderbird, but when I start Thunderbird, after a few seconds, I get a Yahoo sign in screen over the top of Thunderbird

For the past 3-4 days, I am unable to successfully add my Yahoo New Mail account to Thunderbird.

The app says it cannot authenticate my account, but Yahoo confirms Thunderbird's access.

I'm using Thunderbird Version 155.0.1 (64-bit). I reinstalled it after cleaning the installation of Windows 11 25H2 a few days ago.

Please help. I need to move all my Gmail messages to Yahoo, and Thunderbird is the only option I have.

Thank you in advance!

Hi I have just set up AOL accounts for 3 email addresses on Thunderbird. I have set them up as pop accounts and each account can receive emails and send emails ok but the really strange thing is they won't send from one AOL email address to another AOL email address which is something we quite often do as as family. All have pop.aol.com and port 995 along with smtp.aol.com and port 465. Hopefully someone will know what is going on.

WE USE A SOFTWARE CALLED MITCHELL WE HAVE A SHOP EMAIL BUT WE USE THUNDERBIRD TO SEND EMAIL FROM MITCHELL AND SOME HOW IT CONNECTS TO OUR SHOP EMAIL BUT IT WONT WORK WE HAVE TRIED EVERYTHING ARE THEY ANYONE WHO WOULD CALL AND TRY TO WALK US THROUGH ON WHAT TO DO IT WORKED GREAT UNTIL WE CHANGED OUR EMAIL TO OUR NEW SHOP EMAIL AND NOW IT WONT WORK AT ALL SHOP NUMBER [redacted phone# from public community support forum]

In TB prior to v.155, folder message counts were not shown at all if the respective folders were empty. That is, instead of showing "0", TB did not show anything.

Now, after updating to TB v.155.0.1, I see dashes (horizontal lines) in the folder tree to the right of each empty folder.

Is it possible to revert back to the original behaviour and get rid of those unsightly dashes? They only add visual clutter (my opinion, obviously) while not providing any extra information.

Thanks.