The best Email Client alternative to Proton Mail is Tuta Mail, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Proton Mail and many of them are Email Clients so hopefully you can find a suitable replacement. Other interesting Email Client alternatives to Proton Mail are Posteo, Mailfence, Zoho Mail and mailbox.
This secure email platform offers end-to-end encryption, a comprehensive suite with Calendar and Documents. Mailfence is inter-operable with OpenPGP services, features digital signatures, provides keystores, and available as a PWA for mobile independence while ensuring no ads, trackers, or surveillance.
Belgium
EU
Offers comprehensive encryption for email, calendar, and contacts with zero personal info required. Built on open source, install via Play Store, F-Droid, or APK, with Tor and VPN support. Both free and paid plans; utilizes quantum-resistant encryption ensuring privacy-focused, anonymous usage.
GermanyEU
Web- and IMAP-based email service. 4GB cost 1€/month. Information is hosted on encrypted hard drives. Electricity from renewable resources is used.
GermanyEU
Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.
India
E-mail inbox, online office, cloud storage, and video conferencing. Business or personal plans. From 1 € /month (1.10 USD).
GermanyEU
Access, view and manage messages from all your email accounts in one place. Categorize your messages into easy to browse categories. Catch up on email easily with Apple Intelligence powered Priority Messages and summarizations.
United States
Privacy-focused Swiss email system provides 20 GB free storage, supports custom domains and unlimited storage, syncs contacts and calendars, is ad-free, and is part of a secure productivity suite used by over a million users across Europe on all devices.
Switzerland
Privacy-focused email service offering easy one-click PGP encryption, 20 GB storage, disposable email addresses, and compatibility with IMAP/SMTP while adhering to Dutch privacy laws to secure data and communications effectively.
NetherlandsEU
Vivaldi Mail is a free email service with no ads and no strings attached developed by Vivaldi Technologies. It also offers contacts and calendar features, search capabilities, folders management, WEB/POP/IMAP access, 10GB of storage capacity, 20 MB of maximum attachment size...
Norway
Yandex Mail is a reliable email solution for work and personal correspondences with a built-in translator.
Russia
FranceEU
Free anonymous email platform offering automatic PGP encryption, dedicated Tor .onion address, strict no-logs policy, no personal data or phone required, and anonymous payments through Monero, Bitcoin, Ethereum, or credit card. Compatible with Tor and web browsers.
United States
Purelymail is an email hosting app that allows users to manage their emails using their preferred email client software or through the app's webmail service, which is powered by Roundcube. The app is compatible with most mail apps, supporting IMAP and POP3 protocols.
United States
