How to add another email to my FieldTask account?

To add an extra email to your account, go to Profile Settings from the left sidebar,

Click on Add another email.

Input the new email address and click the Add Email button.

A verification email has been sent to the input address. Follow the instructions and verify the email to use it for your account. Once you have done that, you can log into the account from either email and can swap between which one you want as your default.