You have a nice Invite to Join button on the non-member profiles. Unfortunately, if you don’t know the users email, or you seek an outside source, the button seems also useless.
QRZ records email addresses if you have a paid account so I’m not sure if you can pull the address from there but it wouldn’t help non QRZ members.
This is a great idea however the issue is for users that don’t have a QRZ subscription you can’t get the email address from a call signs qrz profile/account. So while this would work for users that do have a QRZ subscription and have QRZ Lookup enabled in the integrations page in WRL, I don’t think there is a way to do it for other users that don’t have the subscription. I’ll still talk to the team about it since its a good idea. We do have some similar functionality that we’ve been discussing and starting working on a proof of concept for so that might fill the gap soon