Outlook may resend old emails primarily due to synchronization glitches between local devices and email servers. These issues often stem from corrupted local cache files (OST/PST) where Outlook stores ...
TL;DR: Microsoft is automatically installing the new Outlook app on Windows 10 with the next cumulative update in February (or its preview, which will arrive late in January). People can still use the ...
There’s a new version of Outlook for Windows, basically a web skin. A lot of people aren’t thrilled about it and are still using the older, standalone version for its better offline capabilities.