If I right-click on any photo or item in the explorer and choose "share", the mailadresses that show up as options in the "share window" is not associated with Thunderbird, but with Outlook. I have tried every solution I have found on the net, incl. making sure TB was chosen as the mail client for any file type, removing any leftovers from outlook and from registration data base, but still only adresses connected with Outlook shows up (and I can see that it is from an old mailing list, that does not include more recent contacts). So why does the share windows not have assess to Thunderbird and its mail adresses?