And once again the #Linux & #OpenSource friendly #Microsoft does its best to damage them, even by breaking its own standards.

Zarafa (now Kopano) has been helping businesses reducing their MS dependency (& costs) by providing an enterprise grade and viable #OpenSource alternative to Exchange and Office 365 for more than 10 years despite MS trying to break the Outlook connector with each update.

This is just the last one:
https://kopano.com/kb3172519-mission-reply-impossible/

Ditch Outlook!

@paolov I shifted everyone to Thunderbird years ago, except 1 user who would not shift until it broke. Her profile got corrupted eventually and I even kept a straight face 😙😇

@rogerggbr Thundebird is good for personal/SMB use but when you have 100s or 1000s of users it's a bit more complicated.

We've been replacing Exchange servers and now Office365 for users that need a centralised platform but unfortunately many won't let go Outlook, that's why MS is trying to break non MS connectors for years to then say that #OpenSource is not good enough.

That's the usual MS modus operandi.