@luckow Thanks! didn't know SoGo can too, updated my post! 🙏
@girish also, I imagine if MailPile hadn't tried to make PGP easy as part of it the developer might not have burnt out and there might be a decent open source webmail app!
Deployed at https://cloudron.io/documentation/security/#privacy-control
+1 from me 🙂 I currently use a custom domain and spreadsheet... plus lots of manual tracking of email addresses I set up