You need the Mobile Module if you want to apply the default Outlook email signature to your emails when using a mobile device such as a smartphone or tablet.
You don't need it if you only use Outlook and Outlook Web for sending emails.
You need the Mobile Module if you want to apply the default Outlook email signature to your emails when using a mobile device such as a smartphone or tablet.
You don't need it if you only use Outlook and Outlook Web for sending emails.