You can use Jatter without an account, but your activity will not be saved. In order for your chats and notes to be retained, you must be logged in. Creating an account is free, and no payment information will be requested unless you choose to upgrade to Jatter Plus.
Click Sign in on the bottom left corner of the home page
If you do not already have a Jatter account, click Create an account
Fill out your name, email, choose a password, and click Create account
Save your recovery code. It unlocks your encrypted chats, notes and browsing history if you forget your password and don’t have another device signed in to Jatter. Tick the box after downloading or copying your recovery code and click Continue
Verify your email using the link sent to the email you signed up with. Check the spam or junk folder if you do not see it in your inbox. You are now ready to begin using Jatter.