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I have been using Thunderbird a long time and I have emails going back about twenty years. This means that the built in import/export feature is hopeless. So I copied the entire Thunderbird folder to the new computer. I was able to transfer thousands of emails, but when I looked more closely I saw that my new Thunderbird only went back about 2 years. I would be very grateful if someone could tell a way to make it include the missing older emails.

After Thunderbird asked me to download a new version & I donated money, all my subfolders to the left have disappeared. ALL my information stored/ emails placed in the subfolders are gone. I have sent several requests asking for HELP. This has been so frustrating I do not want to recommend anyone to use Thunderbird. This has nev er happened to me before and I cannot seem to receive an easy solution a t my end. All folders & emails dumbed into folders are gone???? I need HELP Please.....

I have have been unemployed at the time but still donated $$ to support as often as I can and this has happened which has been a nightmare.

Mary B [removed phone# from public support forum]

I want replace firefox Windows Mozilla MSIX 1- 0 package browser from ms store with regular downloaded version but I do not want to lose all my settings.

How do I go about this?

Thank you!

I have downloaded my Emil to my laptop using thunderbird and then I try to change the name of storage folder to D:\gmail and after that I could not find my previously downloaded email.I need to jknow how I can file my previous downloaded folder.

I have been stuggling to transfer my emails from a windows PC using Windows live Mail, to a laptop using Thunderbird. I have just spoken to my email provider (Plusnet) and they have sent a test email which is received by Thunderbird. But all my emails keep arriving on the old machine. Any suggestions which might help me? David Owen

Install of Thunderbird accepted my donation but does not complete the install. It just returned to the donate screen again. If I try to return to the install exe it wont pass the donation screen. I like Thunderbird but not enough to pay twice. How do I get the install to complete? Appreciate any ideas. Thanks

I recently lived thru the Cox-Yahoo conversion. Yahoo webmail has a folder called SPAM..where all the what I call JUNK goes to but in TB but it never gets into the TB JUNK folder..I can only see it on webmail Yahoo..How do I point the TB JUNK to link with this SPAM Yahoo folder please?

I installed the Thunderbird software on (2) devices to replace the Windows Mail product. On the first device (Windows 11 laptop) I was able to add all (3) personal email accounts needed (1 Spectrum and 2 Gmail). On the second computer (Windows 11 MS Surface) i was only able to install (1) Gmail account and the Spectrum account. The second Gmail account gives an error when it tries to verify the account with Google giving the error as follows.

400 that is an error. The server cannot process the request because it's malformed. It should not be retried. That's all we know.

Since the settings on both computers are the same for the account and both Gmail accounts work on one computer this doesn't make sense to me. Any suggestions would be helpful.

I am running macOS 10.15.7 and Firefox won't upgrade past ESR v. 115 to the "regular" version 127.

Alternately, downloading the Firefox v. 127 installer and running won't update ESR v. 115 nor will it import bookmarks or data from the previous version ESR 115. Firefox v. 127 installs and starts as if I am a new user without any update or import option so that all previous settings, passwords, and data from ESR v. 115 are lost.

Is there a work-around for the upgrade to keep continuity, settings, bookmarks, and data when migrating to v. 127? Thanks!

Is it possible to install TB (or at least the profiles) onto an external SSD (i.e., not the C: drive)? If so, how?

Note: this is not about migration/backup/recovery of profiles.

Windows 11 is consuming nearly all of the C: drive. I badly need to get TB (and Firerfox) onto my E: drive. I further note that the installer gives no options whatsoever as to the destination drive.

I've read everything I could find here and all of that is about using an external drive as a backup. Most of the other help I've found on the web is clearly outdated.

Thanks. jt

I have chosen to not auto-update the browser because it interferes with my work. The precise setting is called "Allow Firefox to" "Check for updates but let you choose to install them" (screenshot attached). However, this setting is not honoured. Every month, the browser auto-updates and forces a browser restart for me to continue working (screenshot attached). For 126->127, there was in fact no notification to update and the update happened automatically in the background with a restart forced upon me. What's the point of having this setting if it's not going to be honoured?

I'm a long-term Outlook user looking to move from Outlook 2013 (now unsupported by MS) to Thunderbird. I've looked at all Mozilla documentation, as well as Google Search and can't seem to find a full understanding of the migration process. I have tried to manually do so using the Tools>Import in Thunderbird, but I continually get an error message that "the current mail client cannot fulfill the messaging request". (Yes, Outlook is my default mail client).

Also, I'm now seeing the following on my Thunderbird home page: Secure connection failed live.mozillamessaging.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown.

Can anyone help an Outlook refugee? Thanks in advance.

Julian