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CloseDeveloper reply by Christopher Leidigh
Rated 3 out of 5 stars
Importing older emails singlewise (not mboxes) does not work any longer with me since update to version 128.6.0esr (64-Bit). The "imported" emails are shown, even after ending and starting TB, but can not be moved by drag&drop and after doing a "repair" on the folder the mails are not there any more (exception on the first imported email).
EmailUserFromBC
Sorry for the issues. I'm hoping you are referring to eml imports as I have a new releases in the review Q that has some eml fixes. You can actually try the beta for this by going to the link below and download it. If you still have issues, please post in the github repository in the same area as the link.
https://github.com/thunderbird/import-export-tools-ng/issues/649
Christopher
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