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I have lost the possibility use Finnish dictionary for spell checking after Thunderbird upgrade to version 60.3.1. How could i revert to older version and prevent automatic updates?

I came across a site "mozdev.org" that gives instructions as to how to download a file called "mailtweak-0.16.xpi" Firefox will not allow me to download it and I cannot find it in the list of Firefox add-ons.

Please advise

My old desktop PC video & audio died, so I installed the C drive into a new desktop PC as the 'F' drive. How can I copy my previous TBird email & addresses from the F drive to the new TBird location on the C drive? btw - I'm surprised that the fix for this common occurence isn't already in the on-line troubleshooting info.

Running TB 60.5.0 - requested update to 60.5.1 Says "downloading update" then "update failed". None of the listed issues such as multiple users, etc. apply. Do not want to download a completely new version and have to go through the complex setting-up process. OS is MAC OS 10.10.5. Never had an problems previously with any updates. Thanks,

I have installed thunderbird, but the sub folders in my webmail are not downloading into the thunderbird application. Thunderbird automatically did imap when I added my accounts. I have no idea what the problem could be. Thank you for your help.

I seem to be able to Export my storage folders from eM client to my hard-drive in Becky format. Explorer shows a main folder and 80 sub-folders all containing quantities of e-mails. Thunderbird Imports the main folder and all the sub-folders but none of the actual e-mails. As a one day user, I managed successfully and easily to load three e-mail accounts but transferring my essential stored e-mail has proved impossible so far. I was able to transfer my contacts successfully but not my distribution lists. Any suggestions on how to do this from eM client to Thunderbird would be appreciated.

Following re-installation of Windows 10 and reinstalling Thunderbird I find that my extensive address book is gone both on my desktop computer and laptop. How can I get it back?

Just starting out with Thunderbird - downloaded 60.5.0 onto Windows 7 Home Premium laptop. Trying to configure a new GMail account using the default setup. Information fills in, then attempts to check password. Message "configuration could not be verified" then appears. Account email address and password work OK on GMail web version. Not sure what to check next.

I am updating from a PC running Windows 10 to an iMac OS 10.3.6. I have important emails stored in local folders on the PC that I need to keep and access when necessary from the Mac. I have read everything I can find on your website and in forums, and have copied the Thunderbird files onto a thumb drive. (See below the files that were copied). I have no idea what to do now. Please help!

I accidentally deleted my gmail account. When I reinstated it I noticed that the old data was not there. I have several profiles saved and can't find out which one contains the data I want. Importing them (the profiles I have saved) only produces more profiles when I decide is not what I am looking for. Is there a way to read contents of a profile without importing into Thunderbird (I have been using the ImportExport add on tool?

I would like clarification about changing Thunderbird email to IMAP. On one of my devices I use POP to access my email accounts, other devices use IMAP. The POP account is set to NOT delete email from the server so all the emails I need are still on the server. Am I correct that if I delete the POP email accounts from Thunderbird the emails stored on the device will be deleted but still be left on the server. So I can just delete the POP accounts from Thunderbird and then add them as IMAP without losing emails from the server.

I have changed from Shaw to Telus, the Telus Tech is unsure if I will loose all my folders and address book within the Mozilla Thunderbird when she changes the Server Settings?

I recently tried reinstalling Thunderbird after our laptop was fixed and upgraded. Everytime I get to entering the details it tells me my password is incorrect - I know its correct as I can access it via a different site.

I HATE using outlook as it will not remember email addresses and I miss Thunderbird.

How do I get past this issue when I KNOW my password is correct??

I want to transfer my mail from an old Windows XP computer running Thunderbird 45.8.0 to a Windows 7 computer (Thunderbird not installed yet). The "How to transfer mail to a new computer" instructions are pretty clear (copy old Thunderbird folder to new computer), but do I have to do anything special regarding the old source files? Can I install the newest version of Thunderbird on Windows 7 and replace the folder with the old one, or do I have to install an old version of Thunderbird (45.8.0) first?

I bought a new desktop Lenovo. I use Thunderbird for my email client in my old computer. I have 20 folders in my Thunderbird email client in my old computer with tons of emails for each folder for each client. I went on-line and followed the instructions on copying and pasting the data to a new drive. I then installed Thunderbird on my new computer and did as instructed to get the data from my old computer/Thunderbird imported to my new Thunderbird client on my new computer, however, when I then open up Thunderbird on my new computer, it doesn't recognize any of the data I imported. Any words of wisdom

I am using Thunderbird on my WIN10 PC now, but I have close to 20 years worth of data on Eudora on an old PC (XP); I have converted data from Eudora to Thunderbird on the old PC, but I need to be able to append it into the current version on the new PC, without overwriting the current files and erasing the newer emails.

Can it be done?