Hello Tehuti,
I believe you can set your email on a premium membership to send email from assigned addresses to a specified box, but if these mails are coming from the general membership, it would be a bit difficult to do so.
I would try to look at these emails as not so much an annoyance, but as the community trying to include you in their activities. I doubt anyone will get offended if you delete the mail or turn down the invites.