It depends. I have an industry website with a very narrow focus, and get about 80% verification rate. I'm considering dropping email verification, but I belie

It depends. I have an industry website with a very narrow focus, and get about 80% verification rate. I'm considering dropping email verification, but I believe that 80% I get now is a very good rate. Biggest thing to consider is your MTA. You have to have SPF at a minimum and domainkeys is getting pretty important too. Outsource your email if you can.