How can I stop invitation spam?
Solution 1:
"Am I able to restrict group invitations so that they only originate from friends?"
The short answer: No.
People have been complaining about this on the Steam forums for over a year. There is also a suggestion for this feature on the Steam forums but alas, Valve in their infinite wisdom have not implemented this feature (hopefully some day they will).
Can I do anything to mitigate the amount of group invites I am receiving?
Yes! You can:
- Set your Profile Status to "Friends Only"
- Don't join any groups on steam
- Don't join any servers
- Block all communications with a person
I personally only do one of the above, and that is set my profile to "Friends Only". I haven't received any Group invites in a long time since doing that.
Some servers have a plugin to automatically invite you to their group when you join their server. I mostly only play on competitive servers so this hasn't affected me.
If you're finding one particular person is harassing you non-stop with invites, you can Block all communications with that person.
Also,"You shouldn't be invited to a group after declining an invite to it just once."