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I have windows 10 at moment, but I know I will have to update to winows 11 soon, but I am worried n case I cannot get my Mozilla back again,.

Do I start all over again, or when I update will my laptop still recognise my Mozilla account.

To be honest, I cannot remember my Mozilla password...eeek !! thanfully, my Mozilla did.

I only want Mozilla, I do not use anythng else.

Thank you for you help.

Barbara from the U.K. x

Hi - I have been looking for over 2 days. How do I import all my data (emails, addresses calendar) from Outlook to Thunderbird.

I have tried Import tool within Thunderbird - import from Outlook. I tried MailStore and was totally confused - the terminology was strange. I managed to make an archive - it took ages to find where it was and I still do not know the file extension.

No videos...nothing.

Thanks

I've used Thunderbird for years, and I LOVE it! A few days ago, my hard drive died. I had it replaced, and I've used my data backup to recover much. I did NOT have programs/apps backed up. I need VERY SPECIFIC steps to download and reinstall Thunderbird so that it uses my old profile. Should I first delete EVERYTHING having to do with Thunderbird and start anew? I did download it today and then went to the C:Users/Owner/AppData/Roaming/Thunderbird folder. In that folder, I deleted the "new" profile file (I think!). Then I moved my backed up folder called Profiles into that directory. I tried to get Thunderbird to use that profile, but no luck. I'm reasonably intelligent (I've been told!), but I can't figure how to do this, and I truly need a step-by-step blueprint. Do I download Thunderbird first? If so, what do I then do to make it find the old profile. I'm running Windows 11 Home on a PC. Right now, I'm going for a long walk to clear my brain. In the interim, if one of you really smart, nice experts could give me instructions on how to do this, I'd be eternally grateful. I have numerous folders, and some really important old emails in that old profile. I also would like to be able to retrieve my address book and calendars ... which I ASSUME are part of the old profile. Thanks in advance for ANY assistance! Don't assume I know ANYTHING!!

Hello: tbird nebula 128.6.0esr w11p. I want to put my 2024 (esp gmail acct) mail into a new profile, keep that profile as mere backup. I've used systools gmail backup & takeout to make what looks like (it opened as a pdf, I think) a successful .mbox file now on my desktop. I've searched the posts here (48 listed) & googled (UPenn has only real answers, but seem too sketchy for me), but no real assurance what I want to do will work. I have created new tbird profiles over the yrs w/no trouble but not for this purpose. But let's say I can successfully create a new profile, & where I want it. So... -do I just create the profile -do I (a) create all the accts (b) just click the "import" fcns in tbird tools (I don't need to remove anything emailish in the new inbox (for example) that tbird put there, since I would not have moved anything from current active tbird profile --right?). And (c) tbird would convert the mbox file(s) from the systools/takeout folder I designate, and the mail in "inbox" & "inbox.msf" folders (for example) would magically happen in the new profile, as converted from that mbox?

 Thank you.

Brand new to Thunderbird. Trying to import my outlook calendar file that I have saved in .ics format. There is a calendar display in my Thunderbird, but the import option for calendar is not active. I don't know if I already have Lightning or how to add it if I don't. Help?

Please indulge this silly question. What possible benefit is there for Mozilla continuing to list this page with the very first, oldest Firefox release at the the top, requiring the user, every time they visit, to scroll to the middle of the page to search out the current latest version instead of having the chronological order from latest to oldest instead?

hi - I'm trying to import from outlook 2003 all my accounts and data (incl email, calendar, address book, etc.) into my just now downloaded thunderbird. when I select the import from outlook option in the import tool, I just get a message saying "no profile found". outlook 2003 is currently installed on the same computer and the .pst file is available in the appropriate folder. I'd greatly appreciate any info on how to make this data transfer. thanks. Charlie

Hi I'm using two PC's, both have Thunderbird on. However, PC1 has version 128.10.2 esr PC2 has version 138.0.2 (64 bit)

Does that matter? What is the difference?

Regards Princy

I *think* I've followed the instructions, but I am unsuccessful in moving Thunderbird Profile to new PC. I copied old profile to external drive. I opened Thunderbird on new PC and found Profile folder. I went up 3 levels and pasted old profile from external drive into folder on new PC. But my old data have not moved. When I go into new Thunderbird and choose "open profile folder", it shows me 3 files: the two that the system created in the new download, plus the old Profile that I pasted there. The new version of Thunderbird uses the "new download" profile as the default. What am I doing wrong? Thanx!

Thunderbird freezes/hangs on restart (mac OS 15.4), including in safe mode. I've updated to 137.0.2 from 129 and the same problem occurs. It only displays "Looking up gmail.com" and I get the spinning disk of doom and have to do a force quit…

I have tried 3 times to do a 100% clean out of my old Thunderbird program for a clean re-install. But it never works, so when I install TB afresh the same glitch pops back up, making the program unusable, and the process has to be repeated. Any clues anyone? I like Thunderbird! I use win 10 upgraded to win 11 and comcast provides my email service. Thanks.

I tried to use Thunderbird today,.. to find the interface was broken, menus were blank, so no ability to look at anything., and error message inferring there was a menu config issue was all that was shown. I duly removed Thunderbird as a snap install, which took a long time as it seemed to be making a backup to somewhere. I then reinstalled Thunderbird 128.11.0esr (64-bit) on my ubuntu 24.04,.. having setup the isp email credentials,.. all seemed fine,.. I then proceeded to import what I assumed was my old local folders... And this is where things went wrong, as I seem to have lost all my archived 2025 emails,.. I say somewhere,.. as I don't seem to be able to find them, I have used the 'find' command to locate anything with 2025 in the file name,.. but without success. At the moment I have a multi-structured 'local folder' entry, but nothing with 2025 in? I anyone able to shed some light on what I may have done wrong Many tx

Trying to set up Thunderbird but details not accepted. Have updated Apple password for icloud email account but can't get any further. Have hit brick wall!

Please help!

I'm trying to import my contacts from Outlook. When I choose import from Outlook, it doesn't import anything. So then I exported from Outlook as a CSV file, and imported into TB. But only the first and last names are importing. I'm mapping the email column to 'primary email', and also mapping the work phone column to 'work phone' and the cell phone column to 'mobile number'.

But emails and phones are not importing.

I'm using TB 136.0 on Win Server 2019

I have a new w11 laptop. I would like to install Thunderbird. I have 8 email accounts on the old W10 computer. I plan on keeping the old W10 computer running and using TB. All my accounts are IMAP--Yahoo, gmail, hotmail (now outlook) but I have an pretty extensive Local folder collection on the old W10 Would I be better off just installing TB on the new W11 computer and adding each email and start fresh or should I venture into copying the W10 profile (some of the instructions seem a bit confusing). If I add all my emails as a fresh start to the new W11 computer could I then just copy the LOCAL folders in the W10 Profile and paste it into the W11 profile?