Side project shipped: QuickMailBites, a native email client that reads directly from AWS S3 buckets.
If you use AWS SES to route emails to S3, this is for you. No mail server needed - point it at your bucket and read your emails like normal.
Also supports IMAP and Gmail OAuth so it can be your only client.
Native Flutter app (not Electron), ~50MB RAM, keyboard-driven, system tray badge.
https://bonskari.github.io/money-maker/projects/quickmailbites/