More Secure, Less Spam: Enforcing Email Standards for a Better Experience
blog.postmaster.yahooinc.com
More Secure, Less Spam: Enforcing Email Standards for a Better Experience
1–2 of 2 posts
Re: More Secure, Less Spam: Enforcing Email Standards for a Better Experience
#2Here are Google's related Email Sender Guidelines: https://support.google.com/mail/answer/81126
Note that these take effect in two weeks.