I-Thunderbird Community Forum

I have several MBOX files with me and I want to import MBOX files into the Thunderbird email client. I've come across different methods, including manual techniques and third-party tools, but I'm unsure which approach is the most efficient, especially when dealing with multiple or large-sized MBOX files. Some methods also seem complicated for users who are not very technical.

Suggest me any reliable tool for this!

I am using Thunderbird as email client on Win 10. When trying to backup old messages I am getting en error message as below. I tried several ways exporting emails as “eml”, PDF’s or even plain text, but all the same. Following error message:

[Exception... "Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIPrefBranch.getCharPref]" nsresult: "0x8000ffff (NS_ERROR_UNEXPECTED)" location: "JS frame :: chrome://mboximport/content/mboximport/utils.js :: getSubjectForHdr :: line 186" data: no]

Exporting: Folder: Inbox Msg: Undelivered Mail Returned to Sender

getSubjectForHdr@chrome://mboximport/content/mboximport/utils.js:186:26 onAfterStopRequest@chrome://mboximport/content/mboximport/exportTools.js:1809:14 onStopRequest@chrome://mboximport/content/mboximport/exportTools.js:1743:28

Can anyone assist?

I bought Thunderbird because Gmail kept telling me I reached my 15gb limit. I thought I could transfer my emails to my local hard drive thereby freeing up my Gmail account. Now Thunderbird is saying I have reached my limit as well. Is there a limit on transferring emails to your hard drive? What am I doing wrong?

I have thunderbird and fastmail is the donor email app I am trying to delete all or most of this email in fastmail using thunderbird and saving or archiving this mail to a separate volume I am using a M4 mac mini.

I just had a support session and the tech was unable to solve the problem. We tried installing a new version of Thunderbird and importing the messages over from the default install and it just freezes up. He tried replacing account settings with the account settings from a previous version and that didn't work either. He suggested contacting Mozilla to see if there was a way to import messages from the frozen default to my new profile.

I recently migrated all my LSU.edu emails over to Thunderbird. Of the nearly 30,000 messages that moved over into the Thunderbird Inbox, only 7179 are accessible (blue button), while the remaining 28,012 are listed in a greyed out button.

Please help me access these 28,000 messages.

Thank you

Brett

Hi, I recently transferred my Thunderbird email to a new Mac. Everything showed up including new emails. But none of my important subfoldersfolders under the inbox showed up. I have all folders on my old computer. Can you guide me on how to recover them or export them to new device? Thank you!

Why the program will not read old zip that thunderbird made,I have watch countless hours of crap on YouTube and still can not read my old zip files, I must be missing a step in process , also I am elderly, so explain it clear Thank you, most appreciated

I am moving my Thunderbird (32 bit) data from an old Win 7 computer to Linux Mint on a new machine with Thunderbird 64 bit. I have followed all the advice to copy the old computer profile to the profile folder in Mint, but nothing appears in Thunderbird. My pop3 email server has 2-factor authentication; I can set this up and access or send new emails, but I can't import all my old email folders. The old Thunderbird is version 115.18.0 (32 bit) and says it is "up to date on esr update channel" The Mint Thunderbird is 140.0.6 esr (64 bit) and was recently installed with Mint.

As these versions are 32 bit and 64 bit respectively, I don't see how I can make them the same version, as recommended for transferring profiles.

How can I make this work?

Old win 10 computer with Thunderbird pop account. Want to move all saved e-mails from old computer to new computer. New computer (win 11) installed thunderbird as an IMAP account. Alternatively, if not practical, how to save old e-mail in readable format. Thanks

A couple of months ago Thunderbird installed a new version (150.0.2) that made me enter a new identity. After I did that, I tried importing the e-mail folders from the earlier version (139.0), but totally without success. So I tried re-installing an older version, but this also, was no longer able to import the folders stored on my hard drive. What can I do????

The newest version of Thunderbird wiped out the stored files from the previous version by making me create a new identity. I have tried several times to use "import" to retrieve backed up data from the old version, but without success, even after I re-installed an earlier version of Thunderbird. Each time I use the "import" feature I get a message that it failed unexpectedly. I need these old e-mails because they contain receipts for charitable donations that I need because my tax returns are being audited. What can I do?

I want to open my MSG files in Thunderbird, but with attachments. I have received a large number of MSG files that are so large in size, and my main problem is that I want all of those files in my Thunderbird. Manually doing that took a lot of time plus in some files, attachments were not supported. Any reliable way to open .msg in Thunderbird?

I transferred my Win 11 T-bird system to a new Win 11 computer using the T-Bird instructions re Profiles etc. The system transferred and operates on the new computer, BUT the last six years of e-mails and my current address book and calendar did not. The calendar that transferred was from 2014 to 2020 and the addresses were also from 2020. The current email addresses and up-to-date calendar didn't transfer. How can I make sure my current data transfers. I still have my old computer with T-Bird installed?

somehow i managed to import from one email account to another thinking i would like it but i don't like since it just makes me have same mail in 2 places but i don't know and can't find how to cancel the import, can someone tell me how

To be really useful to me I need Thunderbird to be able to read my Outlook pst-files.

For years my practice has been to move emails from the ost-file to the pst-file too limit the size of the ost-file. Both files are localized on my computer but only the emails in the ost-file are in my gmail-account. So the method helps me limit the size of my gmail-account but still gives me total access to my email-history.

Without a similar possibility in Thunderbird it's difficult for me to leave Outlook, which I really want to. Can you help me?