In an interview with Mike Birbiglia, Eddie Izzard summed up the exact social dynamics of my inbox:
When I get messages from people I want to get back to, I think “shit, I’ve got to get back to them in a decent way, not just go ‘guhwuhtha'”. You know those emails? “guhwuhtha Okay.” So I think “I’ll hold that email or I’ll hold that message and I’ll store it. And so people I don’t get back to are people I really don’t care about at all, or people I really care about. And so everyone’s in the same fucking bracket.