Thunderbird Community Forum

I've been on Thunderbird for almost 20 years and a Mozilla fan. Have evolved a fairly elaborate configuration of local (POP) email folders, rules, calendar, and accounts to manage & organize email activity, retention, archiving, etc. I've not had to deal with Profiles in previous upgrades and don't have much experience with it.

The recent Oct 1 push of Firefox & Thunderbird 131.0 releases took me by surprise. I was able to re-implement the previous Firefox profile to recover bookmarks, cookies, passwords, etc. However, when T-Bird warned that 131.0 was Beta & unsupported I took the suggestion to download & install the current supported release: 128.3.0 (I was on 128.2.3). Then hell came.

Once downloaded, installed & launched, Thunderbird 128.3 cautioned the new profile created with T-Bird 131.0 was incompatible with previous versions and that I should create a new one, which I did. Still could not get new T-Bird to recognize previous profile, so I tried uninstalling, downloading & reinstalling 128.3 multiple times, each time prompted to create a new profile before proceeding. I tried to follow the previous profile restoration process detailed on support forums & articles, but none seemed specifically relevant to my situation.

I located my profiles in the appdata roaming profile folder, including what I think are most recent based on size of mail folders. Can't determine whether I had just one or several in use due to the extent of my setup. Could really use some help & advice to: 1) Determine which profile was in most recent use prior to T-Bird upgrade. 2) Whether more than one profile was in use. 3) Re-implement the profile I was using on T-Bird 128.2.3 with my new 128.3.0

Regards & many thanks in advance, John C Houston

PS You'll ask why I would upgrade to 131.0 from 128.2.3. Answer: it was on auto-update and 131.0 is what was pushed. No more auto-updates for this guy!

I've never knowingly installed a non-mainline thunderbird, but earlier this week I started getting the following when I open Thunderbird:

This is an unsupported version of Thunderbird!! Thunderbird monthly releases are not considered stable for general use. Use at your own risk, this build is the same quality as Thunderbird Beta.

Checking the version of thunderbird.exe It says its v131, which happens to be the same as the copy of Firefox installed. When I remove and reinstall Thunderbird it starts off as 128 but quickly changes to 131, even after uninstalling Firefox. (Also annoyingly, this stomps on the version in the profile, which 128 claims is no longer compatible, because Thunderbird isn't clever enough to save a copy of files when it makes "breaking" changes to user files)

I wouldn't being on 131 if actually worked, but it gets stuck in the handshake with my IMAP server, and doesn't even show the local folder caches. (It also for some reason shows the window controls on left side of the window title bar, rather than the right).

How can I restore standard functionality?

Dear Thunderbird team I am an avid user of TB (home desktop Windows PCs), but I have been resting on my laurels on v78 for a few years now. I know, shame on me. I would like to upgrade to a stable "modern" release (emphasis on "stable" please). Can you please advise if I should aspire to end up on 115 or 128, and how I might get there ? From reading some older blogs, there is advice that says.... first go to v91, then v102, then v115, and so. That seems a bit tortuous, but I am happy to do so if that is still the recommended approach.

Also, can you advise on how I manage my Profile through all this, do I need to do various exports/imports as I move through these different versions, etc.

Many Thanks

Why is changing column width so complicated and buggy under 128.3. Nebula on Mac?

simply want to enlarge From column - before Nebula - just do it. Now, pain in the back - only lets you do a bit and moves everything else and still doesn't let me do what I used to do. What a mess they made out of a great program !

Since yesterday I have Thunderbird nebula 128.2.3esr on my Windows 10. But I cannot find my calendar and the new left sidebar isn't available, but only a little button on the left upper corner with seven button without function. I've tried a lot, I cannot find any description about a same failure in the Internet.

I have two iCloud mails in Thunderbird. The older one runs great. For the other new one - same settings - mails sent often appear totally blank in the sent folder. Going to the iCloud webmail, sent messages appear totally normal and mails are sent to destination without any problem. I tried everything, no avail. Also weird is I have two "sent" folders (for no clear reason). Both have this issue, not always. See screenshot of iCloud webmail.

I am getting these messages when trying to reply: mail.iinet.net.au587 and Sending of message failed. Peer's Certificate has expired. The configuration related to must be corrected. I would like to know what to do to correct this.

Searching calendar events in Thunderbird used to search both title and description fields. For example, if I searched for "dental" it would find events titled "Dental appointment" and also events with "dental" somewhere in the description field. Now it only seems to search the title. I've always put most of the information in the description field, and I use the calendar primarily as a diary record of my life and things I need to keep track of, so this is a major downgrade in terms of usability for me. Is there any way to still search the description field?

Why can't I retrieve a website that I am directed to in a Thunderbird email? Usually the website is in "blue" and can be retrieved by a simple click, these are just in black.

After the 128.3.0 update nothing in my email works. I can't send or receive emails. I wrote and email and since it wouldn't send I wanted to save it and could not save it. Initially I got the message that my email accounts were black listed. That stopped and I got another error message that kept repeating itself. I am not sure what that said anymore. I rebooted my computer and now it just doesn't work. I checked my settings and they are still correct.

Is there any way that I can go back to the last update? Is there anything I can do to fix this one without losing all of my saved emails? I am using Windows 11.

I am maxing out my Comcast email space allowance (10 gb) and want to move it all to my PC. (i don’t want an encrypted backup, but something readable.) I thought I could use Thunderbird and set up a POP3 account on Thunderbird with the option to leave emails on the server. It downloaded only the Inbox, not the subfolders. I read on the Forum that that is what happens with POP3. My understanding of IMAP is that I don’t get the actual email on Thunderbird, because it stays on the Comcast server.

Is there a way to download all those emails and folders to Thundebird (to keep) and then delete them from Comcast? I don’t plan to use the Thunderbird client for my day-to-day email, simply to store the last 10 years of email.

I have tried to research the forum articles so that I don’t bother anyone needlessly, but can’t find an answer. Thank you.

I have five email accounts defined on a hosting service. On my computer in Thunderbird I have my main account on the left side followed by one of the other five. Then comes Local Folders and two more email accounts. I can retrieve email into my personal account and the one above Local Folders. I can't retrieve into the other two accounts. My wife's computer has HER personal account and one of the ones into which I can't retrieve. She can't retrieve into that one either. I have checked details of the definitions of the accounts on the hosting service and in Thunderbird on both of our computers and can't find anything different on the accounts that don't retrieve mail. I have an Android tablet running the K9Mail client and have my personal account and one of the problem accounts defined. I setup the other problem email account there and got complaints about it not being from a trusted site. I went ahead anyway, went to my personal account and sent a message to the new problem account and was able to go to that account and retrieve the message. What am I missing?

in the older TB for a loooong time, adr book and inbox showed up under WINDOW item new TB changed that and sometimes shows under TOOLS menu but in inbox it doesn't in compose/edit window it shows. See attached

I have been trying to get my Comcast email configured for days with no luck. When I try to log in using my Comcast password I get a screen that shows "Access Denied You don't have permission to access "http://login.xfinity.com/login" on this server. Reference #18.321c2e17.1727662977.283cff2b https://errors.edgesuite.net/18.321c2e17.1727662977.283cff2b. I have allowed access to third party apps on my Comcast account and I am able to access my email on the Comcast website with no problem. I saw something about disabling IPV6 but it said to go to Preferences or Options in the Settings menu. My version of Thunderbird (latest) doesn't have these menu options. I have tried various IMAP and SMTP Port settings I found on the internet and nothing works.

What are the settings for Comcast email in Thunderbird?

Hi. I keep trying to delete messages from my AOL IMAP inbox, and they do go to the trash, which I then delete. But then the messages all return to my Inbox. Is this an AOL issue, or a known issue with Thunderbird? Any solutions?

I have had two Gmail accounts on Tbird for about a year with no problems. Now I get unpredictable or no results trying to send or receive messages from the newer account. A message mentioning unsuccessful server authentification is the most common. "we have sent your message but not mentioned it in the "sent" folder due to connectivity problems" also occurs. I have absolutely no problem on iOS mail or Tbird running on MacOS. To the extent that I can decipher the iOS settings, there is no difference.