ProtonMail Alternatives [Page 4]

Google's encompassing suite of cloud-based business apps.

Web-mail with a terabyte of free storage space & spam protection. Yahoo!

VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

Try for free paid Free Trial $4.99 / Monthly (User)

multi-channel inbox service for collaborative teams

Soverin is the honest email service that doesn’t sell your data.

Newton is a fully featured mail client available for Android, iOS, macOS and Windows.

Check if your account has been compromised in a data breach

163.com is an email hosting solution.

FuseMail provides a comprehensive suite of cloud based email solutions for your business from email security, spam and virus filtering, archiving, encryption and email hosting.

Web-based IMAP email client

Open Source

Temporary disposable e-mail service to beat spam. Avoid spam with a free secure e-mail address.

Android Mail Client.

Everyone.net delivers secure, hosted business email and collaboration solutions for service providers and businesses.

Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.

Open Source