Mailfence is a secure email service with encryption in the browser that's run by Belgian firm ContactOffice Group. The company donates a percentage of its revenue to support privacy groups the Electronic Frontier Foundation and the European Digital Rights Foundation.
Unlike some other services this is a more of a groupware offering with calendar, notes and file sharing functions, and might be a good choice for a small business. There's a free version that's limited to 200MB of emails and 500MB files, while 5GB/9GB entry level subscription is €2.50 per month.
Paid-for versions can be accessed by POP and IMAP. There is no mobile app but emails and events can be synchronised with iPhone, Android and BlackBerry devices via the settings.
The system was straightforward to use with everything just where you'd expect it to be. A cleaned up version of our Yahoo contacts file imported just fine and there is the usual filtering and spam filters. All in all we were impressed with Mailfence. It's a new service but definitely one to watch.
Fully featured secure groupware suite at a good price. Creating, importing and using OpenPGP keys simple. Nice design. Good instructions.
Not so keen
No Q&A facility for sending password-secured emails to people without public keys. Aliases available only by contacting support. Doesn't seem to be open source.
Access via IMAP/POP: Yes
End-to-end encryption: Yes
Free version: Yes
Mobile app: No, but can sync with mobile devices
Open source: Doesn't seem to be
Cost: Basic version is free, with space for 200MB of emails and 500MB files. 5GB/9GB entry level subscription is €2.50 per month.
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