If you regularly work in multiple email accounts, you may want to disable Mixmax for certain accounts without disabling the Mixmax extension entirely.
To disable Mixmax for a specific account, log in to that account in Gmail. Hover your mouse over the Mixmax logo in the top right corner. At the bottom of the menu, you'll see Deactivate Mixmax for [your email]. Click this button.
Mixmax will now be disabled for that account. If you want to re-enable Mixmax, just hover your mouse over the Mixmax logo again.