Thunderbird Community Forum

Issue Related to Backing Up Thunderbird Messages. Trying to back up both my inbox messages and sent messages. Problem relates to backing up inbox messages. First, attempted to back-up (sing the save as function) to desktop (folder). Plan was One Drive would back these up from Desktop. Have 199,000 messages in inbox. Did not save all of them. Then tried to save them in smaller increments to external storage (plenty of storage available). Successful with 4 back-ups of approximated 15,000 messages in each batch. Now will not back-up the full 15,000 ....last successful was 5,000 messages. When it fails, message says "Unable to save the message. Check your file name and try again later." The file naming convention has been the same for all files and have carefully checked to make sure it is not the file naming convention.

What is the problem? Does someone have a solution?

Can you please help me so I can successfully back-up all my inbox messages? Once I figure out an approach want to continue backing up messages using this approach.

Greatly appreciate your help!!

Best, Monica

I've been reading how to move my emails to a new computer. There are two users on the old computer, both with Thunderbird. When moving the email profile to the new computer, does it pick up both users, or does this need to be done separately for each individual Thunderbird email account? If so, I assume I need to set up both users on the new computer before starting the Thunderbird move. Also, how can I be absolutely sure I'm dealing with a recent enough email version on the old computer? My Thunderbird updates frequently but the new one seems to be slightly off.

Dear Thunderbird Support Team,

I am reaching out for assistance with opening .tmp files that originate from Mozilla Thunderbird. These files are approximately 650MB in size and contain copies of my text messages, which I would like to recover.

Unfortunately, I no longer have Mozilla Thunderbird installed, and the .tmp files do not open in any other text editor. I would appreciate any guidance or help in retrieving the contents of these files, as it is crucial for me to access these messages.

Thank you in advance for your help.

Hi. I have recently compressed thunderbird which has wiped two servers. I have three pop accounts on thunderbird. I have a functioning email service on the machine that I compressed but another machine and my smartphone have no emails. I have checked on the servers to confirm they have not archived or trashed my emails but everything is gone. How can I reload the servers from my only good copy?

I downloaded Thunderbird to copy all my yahoo emails plus their attachments, and then taking all of those and saving them to an external hard drive. It took days but I think the first step was accomplished. How do I export all those emails (files, groups) with their attachments to a file on the external hard drive? My goal is to then delete all the emails from Yahoo, but still have the emails. I noticed that if I delete an email on Yahoo that was saved on Thunderbird, it is deleted from Thunderbird. I need Thunderbird to save all that it has. I want to clean the slate on yahoo, but need the emails for personal and business reasons. Respond to me as if I'm two years old -- not so computer literate. TIA