Hello All and Happy Holidays, I work at an IT repair shop and am having the most difficult time attempting to migrate Thunderbird data from a customer's old PC to a new PC. I followed the steps of copying/pasting the data, and it mostly works. The primary issue is that it did not bring over all the local folders that he had saved apart from his IMAP account. The customer is an ex computer science professor and is going blind, so a lot of his relevant information is organized within these folders. Key issues that have made this different from a typical install: -Profile & Local folders are stored in his old OS drive (that is now D:) D:/~/user/appdata/roaming/Thunderbird/~ -files are more than 2GB, so I'm unable to export as .zip -His folders are alphabetical, and every time stops at a particularly larger folder that starts with a D (which had considerably more folders than many others) The only solution I have come up with is copying/uploading the local folders to his IMAP email, but not all emails are being uploaded either. However, has been more successful than the other migration method, but this has to be done a single folder at a time and not all contents of folder are transferred... Is there some type of script or other way to migrate these local folders? Any input is appreciated. Thanks