While nonprofit groups' email lists expanded by 11% in 2017 (and by 13% on Facebook, 15% on Twitter and 44% on Instagram), open rates and response rates for advocacy emails shrank by 1% and 2.2% respectively. Visits to nonprofit groups' websites via mobile devices rose 9% in 2017, and accounted for 40% of the overall visits to those sites. Within the environmental sector specifically, 29% of email subscribers completed an advocacy action at least once in 2017 (compared to a 21% overall average across all nonprofits), and 8% of email subscribers took action 3 or more times (compared to a 6% average). These were just some of the key findings from this extensive report, which examined the digital media work of 154 nonprofit groups in 2017, from within and outside of the environmental community.