Alternatives to Peace Mail for all platforms with any license

Gmail

Gmail is a free search-based web-mail service. It offers a full featured web-based email client with search capabilities, a mailbox with Pop and IMAP access, SPAM...

Free Web Android iPhone Chrome OS Android Tablet ... iPad Chrome Android Wear Android TV Software as a Service (SaaS)
Basic html mode Custom Backgrounds Integrated Chat Integrated Search ... Outlook integration Canned responses Emoji Text support Works Offline IFTTT integration Support for IMAP Integrated Spam Protection Mail filtering Email Server Multiple Account support Organize mails Suggested replies Threaded Conversations Unified inbox Web-Based Yahoo Integration Add a feature

3090 Like
Outlook.com

Outlook.com, part of Office Online (not to be confused with Microsoft Office Outlook ), is a...

Freemium $ $ $ Web Chrome OS
Support for IMAP Support for Aliases File-organization POP3 Support ... Skype integration Add a feature

362 Like
Roundcube

Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client...

Free Open Source Self-Hosted PHP Cloudron
Hostable PGP Encryption Php Add a feature

144 Like
Posteo

Web- and IMAP-based email service. 2GB cost 1€/month. Information is hosted on encrypted hard drives. Electricity from renewable resources is used.

Commercial $ $ $ Open Source Web
Calendar integration Encrypted Email Encrypted mail and contacts Privacy focused ... Security & Privacy Anonymity Privacy-friendly Security focused Built-in Calendar PGP Encryption Transparency Add a feature

53 Like
Mailpile

Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and...

Free Open Source Linux Web Self-Hosted OpenPGP
Encrypted Email POP3 Support Web-Based Add a feature

110 Like
Zoho Mail

Zoho Mail is a webmail service built with the needs of a modern business in mind. It provides features for business users to communicate effectively while catering to...

Freemium $ $ $ Mac Windows Linux Web Android ... iPhone
Custom domain Ad-free Document sharing Integrated Spam Protection ... Mail filtering POP3 Support Privacy focused SMTP integration Two factor authentication Add a feature

90 Like
Yandex.Mail

Yandex.Mail for mobile is an inbox in your pocket which provides secure protection from spam and viruses. • You can use Mail without an internet connection. For...

Free Web Windows Mobile Android iPhone Java Mobile ... S60 Android Wear
Push Notifications Custom domain Support for IMAP POP3 Support ... Unlimited storage Add a feature

132 Like
Yahoo! Mail

Web-mail with a terabyte of free storage space & spam protection. Yahoo! Mail offers grouped conversations, themes, powerful search options...
- Warning
  Has been hacked many times. See https://en.wikipedia.org/wiki/Yahoo!_data_breaches
Free Windows Web Android iPhone Windows S ... Android Tablet iPad Kindle Fire
End-to-End Encryption Add a feature

116 Like
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GMX

GMX Mail is a German-based free webmail service provided by GMX (Global Mail Exchange). In addition to an e-mail address, each GMX account includes a Mail Collector...

Free Web Android iPhone Android Tablet iPad
CalDAV Cloud Storage Mail collector Multiple Account support ... POP3 Support Support for WebDAV Add a feature

73 Like
Fastmail

Email, calendars, and contacts to highest standards of security, privacy and reliability.

Commercial Web Android iPhone Android Tablet iPad
Support for Aliases File Storage Integrated Spam Protection Built-in Calendar ... CalDAV CardDAV Contacts Email Server POP3 Support Sieve filtering SMTP Add a feature

53 Like