Issabel vs Shiftmail
A side-by-side look at Issabel and Shiftmail. For an in-depth review of either product, follow the links below.
Issabel
Network & Admin
Issabel is an open-source unified communications platform that provides PBX, voicemail, fax, instant messaging, and other communication tools. It is built on top of FreePBX and the Asterisk IP PBX.
pbxvoipunified-communications
Shiftmail
Security & Privacy
Shiftmail is an email service that focuses on privacy and security. It offers end-to-end encryption, anonymity, self-destructing messages, and more to protect user data and communications.
emailprivacysecurityencryptionanonymous
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