How to bypass the 4 GB local folder size limit in Thunderbird?

Question

Email

There is a mail server, from it mail on IMAP is received by users. A lot of mail has accumulated on the server, including for the past years, the place on the hard is running out, and I wanted to create a local Thunderbird folder on the file storage, and transfer very old letters there. You can’t delete them at all, you need to store them for the archive. However, Thunderbird stores emails locally in a single file, which is limited to 4 GB, and this is not a file system limitation. Are there options to bypass this limitation? I have already considered the option of replacing hard drives with more capacious ones in the mail server, and if there are no other options left, then I will use it, but it costs money, and the authorities ask me to first find alternative ways.

Answer 1

archiving will break, let's say by years, into separate files