Microsoft Office Outlook
Commercial
Microsoft Outlook is a personal information manager from Microsoft.
Apple Mail
Free
Apple Mail is an email client included with the operating systems macOS, iOS and watchOS by Apple Inc.
Airmail
Commercial
Airmail is a fast mail client for Mac and iPhone.
Hushmail
Commercial
Hushmail is an encrypted proprietary web-based email service offering PGP-encrypted e-mail and vanity domain service.
ProtonMail
Open Source
ProtonMail is an end-to-end encrypted email service.
Tutanota
Open Source
Tutanota is an open-source end-to-end encrypted email software and freemium hosted secure email service.
FastMail
Commercial
FastMail is an email service offering paid email accounts for individuals and organizations.
Polymail
Freemium
Polymail is an email application for OS X and iOS known for its clean interface and additional features atop the Gmail platform.
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