So I'm building a replacement. inbox.camp sits on top of your existing SES, S3, and Route 53. Mail storage stays in your S3 bucket, sending/receiving goes through your SES, DNS is auto-configured in your Route 53. We're the thin client- IMAP, SMTP, and a web interface.

Stack: Hono + HTMX on Lambda for the web UI, Stalwart Mail Server (Rust, AGPL) for IMAP/SMTP/JMAP, client's own SES/S3/Route 53 for infrastructure. Cross-account IAM role for connectivity, fully revocable. Launching this summer. Happy to talk architecture, answer questions, or hear why this is a terrible idea.