DarwinMail packages your email before it's sent into a raw format (that's not comprehensible text, but a mix of letters and numbers - like IBASDBAA2982NFIUEXJWI

DarwinMail packages your email before it's sent into a raw format (that's not comprehensible text, but a mix of letters and numbers - like IBASDBAA2982NFIUEXJWI02FDIEWD) - but a lot longer! When the mail is received on another client (Outlook, IMAP, etc) the client knows how to parse the email - to show it to you. I can't speak for other email clients, but I can tell you with all certainty, that DarwinMail does not store any of this email data. DarwinMail just displays it to you on your device. The code is all available for you to look at. On DarwinMail just right click -> inspect and you can see everything. Reminders are stored in your browser. They do not touch DarwinMail's servers :)