Surely somebody already said this and there are thousand of reasons of why it won´t work, but what about an inbox only allowed by recommendation. Only the peopl

Surely somebody already said this and there are thousand of reasons of why it won´t work, but what about an inbox only allowed by recommendation. Only the people you already have in your contacts can give access to your inbox (or at least to the important inbox). All the non recommended mail could go to a bulk inbox, just checked now and then(not your workhorse inbox). That way you make the email work just as society works, some one you know introduces you to the people you want/need to know. Maybe it isn´t enough filter for PG, but could help to less busy people keep the inbox less crowded.