Access email settings
To access email settings, click and expand the list .
When you have connected your email account emails is shown per default. You can turn it off via the toggle
You can also choose to not show the first email when opening the tab. Turn it off via the toggle
Connected email accounts
First of of all, if you don't have a connected email account you need to to that. Follow these steps to do it.
This lists your account that you have connected with the app
Here you can toggle on / off features such as email, calendar & contacts
This is where edit your email signature for email sent from the app.
This does not change you signature in your Office 365 account. Just emails sent from the app.
To disconnect your Office 365 account click disconnect followed by yes.
If you disconnect it you can reconnect it again.