This is the "support" I received from Microsoft when I inquired why my emails were suddenly getting rejected as spam from gmail recipients:
"We found this as a known issue as currently Gmail is having issues receiving emails from Microsoft. Kindly minimize the rate of emails that you sent to Gmail." (emphasis added)
I get that Microsoft and Google are increasingly colliding, so both companies are going to implement changes to their products and services that create challenges for users crossing over into/onto each other's platforms. You should be ashamed of yourselves, creating angst for your users in an effort to wall-garden them into/onto Microsoft platforms. This is exactly why the DoJ and FTC are going to crawling around Redmond for the rest of the decade.