Note: this is https://bugzilla.mozilla.org/show_bug.cgi?id=1084993 and applies to at least Windows and Linux. The linkage via env vars is likely since both Thunderbird and Firefox are based on the same code
** Bug watch added: Mozilla Bugzilla #1084993 https://bugzilla.mozilla.org/show_bug.cgi?id=1084993 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/12097 Title: mailto link always attempts to open a fresh thunderbird instance To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/12097/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs