Email Authentication: the Ultimate Guide
Email authentication is becoming a big deal. Authentication allows the mailbox provider to confirm that the sender is the one who he pretends to be. If authentication fails, the emails are likely to be filtered as spam or rejected. Thus, email marketers should set up authentication records for their sending domains to increase the trustworthiness in the eyes of the receiving email servers.
And it’s important to regularly test email authentication records using an email spam checker to make sure that the messages won’t go to the spam folder due to a failed authentication.