Dive Brief: 

• Android Police's Artem Russakovskii examined code for the new Gmail Android app, finding evidence that the mobile app will soon be hosting ads. 
• Android users will apparently be able to save ads as messages or dismiss them. 
• This is a major difference from ads appearing as e-mails in the desktop version of Gmail's "Promotions tab," where they can only be favorited and not saved or dismissed. 

Dive Insight: 

It was only a matter of time until Gmail moved an advertising system into their Android app. The challenge Google faces now is to find a way that ads are noticeable without disrupting the user's experience. Doing so on such a small screen will be a serious challenge.