One of the more common complaints from senders is that ISPs won’t tell them what to do. Al Iverson takes this on in his post “Did you catch that?” He says:
[...] email service providers and marketers repeatedly [ask] for ISPs to tell them what the rules are. [...] ISPs have been telling you what the rules are for years now. Stop feigning deafness.
Changes are coming, and the warnings are starting. Are you listening?