For commercial use, though, you'll need to upgrade to the pro version. Furthermore, it comes with a built-in calendar, task manager, and a live chat that works with Google Talk, Jabber, or any other XMPP-based server.ĮM Client offers a competitive free plan where users can add up to two different email accounts and comes with the full extent of features. It's possible to have various emails working at the same time, delay sends, snooze your email, among other neat features that will make managing your inbox a breeze. However, eM Client shines the most when it comes to the email features it offers. When it comes to security, eM Client provides a thorough spam filter as well as phishing protection and lets you easily send encrypted messages through S/MIME and OpenPGP. Since then, it's had time to hone its offer and come up with a well-rounded product security-wise and feature-wise alike. eM ClientĮM Client has been on the email service market since 2006. Nevertheless, you can grab the free plan and use ProtonMail's to its full extent, or upgrade to Plus for $4 per month to increase storage space, get five email aliases, and a bridge to use with any desktop email software. Unfortunately, security comes at the expense of some neat features like a calendar, filtering by searching an email’s body, as well as grouped emails. Simply put, everything is encrypted and out of reach to third parties, including from ProtonMail itself. What about when you receive an unencrypted email? In this case, ProtonMail will encrypt the content at the moment of its arrival and only afterward store it on its servers. Better yet, the user can send an encrypted reply right away, without the need to leave the platform.

The receiver gets an email with a link to a temporary ProtonMail inbox, inserts the password and, voila – the content is unencrypted and readable. The user creates a password when writing the email and clicks on send. When sending emails to receivers using other email services, though not automatic, it's pretty easy to encrypt them as well. It offers extremely straightforward end-to-end encryption, with all emails automatically encrypted when exchanged inside ProtonMail's sphere.

Created at the heart of CERN, ProtonMail boasts over one million users worldwide.

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