[heartbeats]

You could whitelist the email providers, and require "strange" email providers to be approved by mods. The workflow would look like this:

1. Sign up with Gmail 2. Verify email 3. Account is instantly approved

1. Sign up with sharklasers 2. Verify email 3. "You're using a weird email provider. Mods will look at your account and see if it looks OK. If so, we'll approve it"

[hinkley]

Don’t telegraph that information, I think. Better perhaps for the automatic approval to look like a fast human and the manual approval to look like a slower one. A process doesn’t have to be manual to look manual. The goal here is to reduce the cost per request.