I made an email client for macOS/Linux focused on one thing: owning your emails locally.
It backups .emls in maildir locally, as well as highlights mismatches in reply to address to displayed.
Alternative view's for email like explorer - date/sender based. Email insights - top senders, frequency graphs. Local usage stats - so you could see how gmail is capping the 2500 Mb a day.
Lots of layouts to customize to your liking.
Live online demo - no need to download. Highly recommend having a look and playing around a bit.
Links: - Website: https://mailvaultapp.com - Live demo: https://mailvaultapp.com/demo/?lang=en - GitHub: https://github.com/GraphicMeat/mail-vault-app - Discussions: https://github.com/GraphicMeat/mail-vault-app/discussions/1
Happy to answer any questions about the Tauri/Rust, IMAP architecture or anything else.