Deliverability Defined Plus an exciting update from Gmail that you need to know about ⚠️ First things first You're receiving this because you signed up for my deliverability newsletter, Deliverability Defined, possibly through a recommendation from another newsletter you follow. It's been a while since I've shown up in your inbox (more on that below), so if this isn't what you signed up for anymore, no hard feelings at all — just click here to unsubscribe. Still with me? Great, because I've...