+++ This bug was initially created as a clone of Bug #1530820 +++ Please refer to few last days of comments in Bug 1530820 starting from Comment 165 (https://bugzilla.mozilla.org/show_bug.cgi?id=1530820#c165) In a nutshell a new MAPI/SentTo issue raised recently affecting TB 64 bits version on Windows 10 for some users.
Bug 1601879 Comment 0 Edit History
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+++ This bug was initially created as a clone of Bug #1530820 +++ Please refer to few last days of comments in Bug 1530820 starting from Bug 1530820 Comment 165 (https://bugzilla.mozilla.org/show_bug.cgi?id=1530820#c165) In a nutshell a new MAPI/SentTo issue raised recently affecting TB 64 bits version on Windows 10 for some users.