You know those those “introduction" emails? Someone thinks you should meet someone else, and emails happen about it. Or it’s you doing the introducing, either by request or because you think it’s a good idea. Cutting to the chase here, those emails could be done better. Eight years ago, Fred Wilson coined the term "double opt-in intro".
This is how it can work.
You’re doing the vetting
Since you’re writing the emails here, it’s your reputation at stake here. …
Double Opt-In Email Intros is a post from CSS-Tricks