How to update a User Email

Go to the left-hand side taskbar and click on ‘Users’.
From the drop-down menu, select ‘My Team Members’.
This page will display all of your Users. Click on the User you wish to update an email for. This will take you to the User's profile page.
On the left-hand side there is a drop-down titled ‘Email Accounts’.
Click on this and then click on the ‘Create’ button.

The info box and the top of the page will note that you must enable third-party applications in your email account and disable two-factor authentication to be able to add the updated email.
To do this you need to go into the security settings of your updated email account and allow less secure apps and turn off two-step verification/two-factor authentication.

Then select the email provider of the newly updated email you wish to add.
Enter the Account Name.
Enter the Email Address that you wish to add and the password of that Email Address (NOT your SwiftCase password).
Check off the ‘Make this your default account’ check box.
Add a Signature in the Signature box if you wish to have your signature displayed in your emails.
You can add an Alias Email Address if you want, although this is not required.
Check off the ‘Enable the mailbox’ for your account box.
Click the verify button. You will then be returned to the User’s profile page and a message will be displayed at the top of the page that reads ‘email successfully added’.