By 

Email marketing continuously proves itself to be the most cost-efficient digital marketing channel by generating the highest return on investment per dollar spent, but marketers can elicit even higher returns by including email campaigns in a cross-channel approach.

Utilizing a cross-channel marketing approach increases user engagement by more than 900% according to Braze (previously Appboy). The mobile engagement and automation company analyzed more than 300 million user profiles across Android and iOS devices to examine the impact of cross-channel campaigns on user engagement this year.

Read more.

Source: MediaPost