Shift Basic is a completely free version of Shift. Here’s what’s included with this option:
Access to 2 Gmail and Google Inbox accounts
Navigate between Mail, Drive, and Calendar accounts
Cross platform support (Windows, Mac, Linux)
A clutter-free desktop
Native desktop notifications
‘Sent with Shift’ email signature
All members automatically get a month of Pro upon download. After 30 days, you’ll have the option to upgrade to Pro, or downgrade to Basic.