Actually, I don't find a way to synchronize thunderbird on 2 computers. It is really sad but there is no easy way to manage it ... no add-ons or sync options such as on Firefox. I was wondering if it could be possible to use Ubuntu one for this. I thank you all in advance for your help. Regards
You could store your whole profile folder in a shared folder that is synched with ubuntu one and place a symlink in the old location so thunderbird picks it up.
Your profiles are stored in
If you're only interested in synching the emails, not the addons and settings of your mailclient, you should just switch your account type to IMAP.