No one ever talks about the two different kinds of email. Incoming (identity) and outgoing (messaging). I self host for the former and send through a smart ho

No one ever talks about the two different kinds of email. Incoming (identity) and outgoing (messaging). I self host for the former and send through a smart host for the latter. I can’t begin to enumerate how much identity I have accumulated over the last 30 years. I must be known by hundreds of ID tokens (email addresses) and yet I have only ever sent from a handful. Blessed is the inbound SMTP. Outbound* is a cruel mistress. *to gmail et al