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Hello I'm using TB 128 esr / flatpak on Ubuntu 25.04. I'm satisfied, but I want to install Thunderbird in parallel before switching to this version. https://support.mozilla.org/fr/kb/installer-thunderbird-sous-linux#w_changing-channels I read and managed to install TB "monthly beta" by extracting the tar file. It wasn't possible to retrieve the profile via the zip file because it's 2.4 GB. It seems to work, even though it uses quite a bit of CPU power, ~20%!

1/ Anyway, my main interest would be to have a usage similar to Firefox standalone, which I can use from my computer to my laptop :-) with the same profile stored on an SSD data drive. I don't want to install the profile on my computer or laptop system drives!

2/ How do I launch this version at startup?

REgards

My version of Firefox wont save History, Bookmarks or Downloads. I've made sure the privacy settings are correct and have tried reinstalling Firefox several times. It also wont let me drag a link from the address bar to the bookmark bar anymore like it used to. Any help with this would be much appreciated... Thanks!

I created a user profile for IMAP and all was OK....Until I deleted the profile for POP and I lost all e-mail folders that I didn't move to IMAP. My PC is running Linux Mint. How do I get my lost e-mails?

I'm asking this question so I can post some helpful information for people wanting to create a backup of their profile.

If you are using Windows OS and you got your download from the official website: https://www.thunderbird.net/en-US/thunderbird/all/

How do you locate the correct folder to backup? The backup must contain everything, profiles, mail accounts, emails, address books, calendar, preferences - the lot. The backup can be used to transfer between computers.

Running Thunderbird 140.0.1esr (64bit) on Windows 11 Dell desktop.

Have had two active mail profiles running for years, one for each of us in the family. Some weird things are taking place now.

This afternoon when initiating Thunderbird by selecting Thunderbird icon on the task bar as always do, Thunderbird began going directly to my profile, not bringing up the 'Thunderbird - Choose User Profile' window. This has happened previously and I got instruction on the forum how to resolve, so I did that resolution again.

I ran Thunderbird.exe -p in the RUN box .

It bought up the 'choose user profile' window so I UNCHECKED the box 'use the selected profile without asking at startup.' I guess somehow it got inadvertently checked. I expected this to resolve the problem. Note: When the box came up the first time I did NOT notice the names of the profiles offered, ours or the default ones mentioned below.

Now, when I initiate Thunderbird by selecting the icon in the task bar or selecting the icon on the desktop or selecting Thunderbird in the START list of apps -- it still goes directly to my profile not bringing up the 'Choose User Profile' window. HOWEVER, when I enter in the RUN box either thunderbird.exe or thunderbird.exe -p it brings up the 'Choose User Profile' window.

BUT -- the profiles offered are default and default.esr. They are not our two profiles we have been running for years. Our two profiles are still in the Thunderbird Profiles directory as seen with File Explorer. Hovering over default and default.esr shows their respective paths to the Thunderbird Profiles directory. (Cannot edit these paths.) But using File Explorer, these two profiles (default and default.esr) are NOT seen in the Profiles directory at all.

Question: 1. How do I get Thunderbird to function correctly. That is, when selecting the Thunderbird icon it brings up the 'Choose User Profile' showing our two profiles, and when I RUN Thunderbird.exe in the RUN window it ALSO shows our two profiles in the 'Choose User Profile' window, and NOT that default and default.esr profiles which I don't even see in the Profiles directory.

One more thing -- I have been thinking of switching over and installing the Thunderbird Release Channel -- If I installed it, would these problems carryover or would they be resolved? Thank you.

Added this note: In the past when the box 'use the selected profile without asking at startup' got inadvertently check and I resolved the problem by running thunderbird.exe -p, I was not running the Thunderbird version I am running now. It was back on 9/22/24 and I forgot what version it was but I don't think it was the ESR version back then. Maybe that is why running this command worked back on 9/22/24, but getting weird results now with the current esr version running. Thank you again.

I have followed the instruction https://support.mozilla.org/de/kb/Benutzerprofile-Thunderbird#w_ein-profil-sichern to shift my profile from one harddrive to an other on my PC

The original profile is still on the old location %APPDATA%/Thunderbird I have updatet profiles.ini pointing to the new location At first glance it seemed to work Thunderbird was starting and when I cloesd it the date of files in the new location changed. But when I renamed the old profile in the old location Thunderbird does not start correctly and I only get

   <menuitem id="folderPaneContext-getMessages" < pre>
^
If I rename the old profiles again to the original names, it starts without any issues
</menuitem>

I just installed a new router and all of a sudden nothing is working properly on my PC. Among other things, I need to fix Thunderbird, and for that I need to find where my thunderbird profile is. The instructions I've seen say to go to troubleshooting information, find profile folder, and click on "open folder." When I do that, nothing happens. (I told you installing the router appears to have broken everything--I don't know how that happened, especially since I was on the phone with tech support for the router for install), and I'm no closer to finding the profile file. I can enter %appdata%\roaming\thunderbird\profiles but that shows me two different profile directories and I don't know which one is the right one. How can I find the correct file and why doesn't troubleshooting information just show me that?

I'm on a Win 10 desktop. Version 140.3.1esr worked okay yesterday but when I started it this morning it is now missing my email accounts, folders, calendar, and contacts. Unfortunately I haven't done a backup in some time. The first image shows what I see.

The 2nd image shows that there are 2 profiles in the Thunderbird folder. The rc2jk0cq.default-release profile was created today & appears to have all of my data; it's the default profile. The v9w93tjh.default profile has an extensions folder and 3 files.

How can I recover from this?

Thanks

Just this week I found it was impossible to get to firefox browsing until I chose an upsetting blob as my profile. Is there anyway to skip this step or at least to change that blob to something that makes a more pleasant experience?

Sorry for the long=winded message but I figured it would save time to explain the steps from the beginning.

I've been using Thunderbird as an OSB for my archived messages from Apple Mail. In that scenario I create a .mbox file of all messages I want to save from a particular year and then import that into Thunderbird into a local folder with the year as the folder name. The version of Thunderbird where I was doing that is 115.10.1

I started testing Thunderbird version 139.0.2 as an Apple Mail replacement with only 2 of my email accounts.

Now I want to convert entirely out of Apple Mail. First I made a backup copy of the entire Thunderbird folder located in the User/Library folder onto an external hard drive that I then disconnected from my computer.

Then I downloaded the latest version 145.0 (aarch64) and installed it. (I still have the other 2 versions on my system) I opened it up and got into the profile manager (troubleshooting then about profiles) and discovered that I have 4 of them. I made the one that contains my archive the primary one. It does not have any connections to a live email account. I've only ever imported an .mbox file. Everything that I've archived is there. This is profile Number 1. I renamed it Archive so I could keep track of it.

Then I opened up each of the other 3 profiles in a new browser in sequence to see what they were.

It appears as if I have one that is empty. it opens up wanting me to set up an existing email address. I closed that one down. It's called Profile number 2.

The next one appears to be the current one for the 2 test email accounts. It has them properly configured, showing messages in the inbox and with the messages that are supposed to be archived off in the local folders I had created as I expect. I am calling this one profile number 3.

The third one first had me add the passwords for the 2 test accounts and then it is pretty close to number number 3 but is missing some of the local folders. This is called profile number 4.

Want I want to end up with is 1 profile. I would prefer to start with the one that has all my archive messages in their local folders, and then add the test accounts including all their messages from profile number 3 with its local folders. Once they are safely moved and part of the Archive profile I would like to delete all three numbered profiles. Once I am down to only one active profile and no others lurking about I plan to slowly start adding the rest of my email accounts moving them one by one out of Apple Mail and into Thunderbird.

I've read the various articles on moving out of Apple Mail into Thunderbird So I believe I can add the Apple email accounts to my Archive profile successfully. I have the import tools so I can import the .mbox files from Apple mail into those accounts.

Where I'm stuck is I can't seem to find an article that gives me detailed instructions on how to combine profiles within Thunderbird. All the articles imply keeping multiple profiles active and I would prefer not to do that.

I am sure I am just not searching properly but I am at a loss as to how to proceed. I do not want to delete any profiles or start adding more accounts until the profiles are cleaned up.

Thanks for reading this long explanation and I appreciate any help anyone can provide.

So I have a bunch of Firefox profiles I want to set up a new profile and I want to set up the profile switching with in that profile perhaps by creating a bunch of profiles from the about profiles page and then replacing those profiles with the old ones as I don't see a way to just import old profiles in the UI. How do I go bout doing that like copy and move exactly what exactly where.

I do not understand how profiles work, and hence don't know how to fix my problem. I had a problem with my printer connection, and tried to solve it by rolling back my Linux O/S, (using Timeshift) to a date prior to the printer not connecting. (It didn't help.) But what it *did* do was to screw up my TB, which when I tried to open it, after the roll-back, complained that the TB profile was "newer", and I needed to create a new one. I did this, but then found that all my old emails had disappeared and it had started a complete new collection of emails, and all the mail folders had disappeared . I went back to the data backups from prior to the rollback, (using Cronopete), and was able to find the TB profile (and 5 years' worth of old emails) in the .Thunderbird folder in the Home directory. And I have pursued the profile manager in TB, and located the profile from before my roll-back. But I can't figure out how to recover this old one. I have a button "Set as Default", (I hesitated to commit to this - should I?), and another for "Launch Profile". But when I click on this last, it drops right back into the requirement to create a new profile. I already have one new profile, (which was created when I tried to sign on to TB after the roll-back.) I can't see much point in making yet another one. And I don't really understand how the data are stored in the profile in any case. (emails seem to be in a Mail folder, but are scattered about in a whole series of sub-folders and files within the Mail folder). And some of the numbered "profiles" seem to refer to things other than Thuderbird, (they lack any folder named "Mail".)

I am trying to copy my Thunderbird profile folder from my Windows PC to my Linux Mint PC. I have successfully done this a few times previously, but this time it seems that Thunderbird does not 'see' the folder.

The Thunderbird folder copies to the correct folder (according to the instructions) OK, but when I start Thunderbird, nothing is shown. This is the first time that I have moved Thunderbird to A Linux OS, but I can't see what I am doing wrong.

bonjour, J'ai installé un nouveau profil, mais j'arrive pas a utiliser l'icone -sélectionner messages à droite au dessus des mails- appliquer ces paramètres/la vue... Ca me serai utile pour simplifier et unifier mes affichages. Actuellement j'observe aucune changement, bug ou erreur de manip.

I've used thunderbird for years. Now I can't get it back. I tried a clean uninstall/reinstall. Downloaded from the thunderbird site. Seems to install fine, but then says no profile recognized. I put some old profiles in the appdata\roaming\thunderbird\profiles in desperation, but still no luck. My clean uninstall did involve registry entries (Revo-Uninstall). So I'd like to get a clean start with Thunderbird, but it won't let me. Any suggestions greatly appreciated. I dread the idea of using another email after all these years!

I'm struggling to understand where Thunderbird stores everything on a Windows computer so that I can use my incremental automated backup system to keep things backed up.

This support article :

[- Where Thunderbird stores your messages and other user data]

only mentions about the <user>\AppData\Roaming\Thunderbird\Profiles folder but there is also a <user>\AppData\Local\Thunderbird\Profiles folder that appears to be used and needed.

There is a ton of other conflicting 3rd party information out there so I'm hoping for a definitive answer here.

My question is : Can I backup just the '<user>\AppData\Roaming\Thunderbird\Profiles and <user>\AppData\Local\Thunderbird\Profiles and be assured that I will be fully able to recover my email client in the case of needing a complete reinstall ?

I deleted a profile from my Thunderbird account, but I keep getting a popup login screen. I can no longer access this profile. HOW can I get rid of this popup screen? It continues to popup every few minutes! Need it to stop!!

Hi, I have moved to a new computer and transferred my Thunderbird account to it without any problems. However, I wanted to do a backup of my profiles, etc, but the old Thunderbird backup link no longer works. Has it been discontinued, and if so, what replaces it?

My Windows 11 was recently reinstalled to factory settings, which uninstalled Thunderbird but saved my mobx files. I used Thunderbird exclusively to view older emails that are stored on my PC as mobx files. I do not use Thunderbird as an active email client. I reinstalled Thunderbird, but have been unable to get it to find my mobx files that are stored together in a folder.