Some 21% of permission emails from legitimate senders around the world failed to reach the inbox during the year-long period from May 2014 to April 2015.
Social amplification rates of US influencers were highest in the electronics category, at 0.66%.
The Social engagement rate for US influencers averaged 3.4% in H1 2015.
The average earned media value from US influencer marketing programs was 1.4 times higher in H1 2015 than the overall average in full-year 2014.
Self-reported alcoholic consumption is far higher among Americans from high-income households than lower-income households.
Facebook advertising CPMs were highest for the telecommunications industry and lowest for the gaming vertical in Q1 2015.
Mobile applications examined by Urban Airship across 15 industries had a median push notification opt-in rate of 42% in 2014.
87% of SMB owners and managers agreed that positive customer perceptions of their brands were important.
Facebook accounted for 81% of content shared to social networks.
Some 84% of global online consumers aged 16 and older report sharing content online.