Feature Request: Own mailaddress not for foreing calendars

[c-schwamborn]

Subscribing to any calendars, even the ones owned by someone else, which may also be write protected, results in calendars linked to ones own mailaddress. This results in a quite strange behavior regarding invitations withing Thunderbird. Maybe TBSync should not configure Mailaddresses at all in subscribed calendars in the first place and let the user configure this afterwards.
Usually the number of calendars, linked to a mailaddress is rather small and more specific addresses for each calendar, not always the same primary standard ad.dress.