In this tab, you can control on which devices your campaign will be delivered. Every type of device is selected by default.
Desktop
Include or exclude desktop users by Operating System: Macintosh or others.
Tablets
Include or exclude tablet users by Operating System: iOS or others.
Phones
Include or exclude tablet users by Operating System: iOS or others.
Beware that some email clients may pass insufficient device information to our servers, or no information at all. For example, Google Mail (Gmail) reports every device as “Google Device”. This means that targeting a campaign only towards Phones will remove all Gmail users from the delivery pool as our servers can not determine if they are using their phone or another device to open the email.