Senders using these systems would also have to agree to only send messages to subscribers who had opted-in to receiving those emails, writes The New York Times.
Both firms have confirmed that they would treat emails from companies that had not signed up to the new system in exactly the same way as they do now.
According to The New York Times, AOL is due to start accepting ‘charged’ email within the next two months. Californian email certification firm Goodmail Systems will handle the payment and verification aspects of the system. Yahoo! is also expected to start trials of the system in the next few months.
