I hope I am not asking a duplicate question here as I have tried searching first.

I need to remove members of my network who no longer are part of the network.  That includes within specific groups too.  They are not spammers, cause no trouble where I would need to suspend them. They are just no longer part of the site.  I have tried to get them to remove themselves but have not received any answer to that,  probably because they  no longer have the email address to even recieve the information.

Any information to remove rather than suspend?

Thanks!

Amy