Transfer of Thunderbird emails to a Chromebook
I have used Thunderbird for many years and have over 11 years of emails on my Linux laptop. I'm moving to a Chromebook and have installed Thunderbird on it. It is working fine. I only want to transferr about a years emails to my new machine so the "folder transfer " mention is not good. I have tried the import / export method but every time I select a group of emails of about a year the resultant zip file is about 10 gbyts and the import will not work. Thank you for any assistance you may give
Paul