I’ve been researching this issue for sometime. I was in fact getting Yahoo calendar spam invites long before they started sending them out via Apple’s Calendar. I just didn’t have the time to research it till now.
I contacted Yahoo for help. Their reply to stop the THEIR calendar spam is as follows:
“Hi Amy, I’m sorry to hear you’re getting spam. Please see our Help Article on reporting abuse: https://goo.gl/M1evgV
Most email providers have tools to block or filter incoming mail. Please review your provider’s documentation for steps.”
While this is the most disgusting response I’ve ever received from any kind of support, it is Yahoo’s ONLY response to any kind of spam issues. Block and report. Instead of Yahoo doing their job and following spam laws. Yahoo is to stop the spam, NOT YOU the user. But this is how Yahoo has worked for years.
I hope you found Yahoo’s support response on how to stop Yahoo spam calendar invites as useful as I did.
If you decide to follow Yahoo’s stupid advice as it will only cause bounce backs, you can block the following:
That will block ALL calendar invites from Yahoo.