Why am I suddenly receiving spam calendar invitations/appointments in Outlook (Microsoft 365 Family).

No. I never got an email, they just popped up in my calendar with no way to block the sender.

Same. This spam event e-vite bypassed all emails and went straight into my calendar. Do we all have to migrate to gmail to stop spammers from flooding our schedule?

This doesn't help. Sometimes a new associate wants to set up a meeting for an interview or to touch base. I should be able to mark it as junk from my email inbox without anyone with my email address flooding my calendar with reminders to buy their scam Netflix renewal or whatever. These emails are going into my junk email, but they still wind up on my calendar.

Iv commented and been following this thread for a couple of weeks now and I’m pleased to say I have only had ONE of these scam emails which was on Thursday. Since I have been marking them all and ‘reporting’ on the outlook webpage. Weather this is why I’m no longer getting many or it’s another reason I’ll never know.

There will be an email somewhere in your scam folder, the text shown as the ‘event’ on your calendar will be the same text shown in the email ‘header’ you can also find the email address they have come from on the event it’s self on your calendar and block this email. Hope this helps