Google's Online Security Blog posted earlier today regarding improving email security including "opportunistic TLS"[1] through the M3AAWG association, which doe

Google's Online Security Blog posted earlier today regarding improving email security including "opportunistic TLS"[1] through the M3AAWG association, which does list the above companies as either sponsors or members[2] 1: https://googleonlinesecurity.blogspot.com/2015/11/new-research-encouraging-trends-and.html https://googleonlinesecurity.blogspot.com/2015/11/new-resear... 2: https://www.m3aawg.org/about/roster https://www.m3aawg.org/about/roster