Proton Mail : Proton Mail is built with end-to-end encryption and zero-access architecture
Zoho Mail (2025 Edition) : Now packed with AI sorting, calendar syncing, and task management integration
Tuta (formerly Tuta) : A fully encrypted and open-source, ad-free e-mail with built-in calendar and contact encryption
Fastmail : Fastmail adds fiery speed, excellent filters, and a newly minted AI-powered organization
Skiff Mail : Skiff Mail is a privacy-aware email platform with a beautiful UI for collaboration and seamless integration with Skiff Drive, launching in 2025