Not Thunderbird but I use DavMail to access Office 365 mails and calendars from Kmail. It has been a really smooth experience for the 6 months I have been using it. Not affiliated in any way, just a happy user.
Not Thunderbird but I use DavMail to access Office 365 mails and calendars from Kmail. It has been a really smooth experience for the 6 months I have been using it. Not affiliated in any way, just a happy user.