Secure your identity and make the (email) world safer.
Article from SendGrid, our send layer.
Authentication is an "ID check" for your mail streams: it validates that the email is actually from you, and not some spammer impersonating you. Authenticating your email streams does not ensure that your email will be delivered, but it helps ISPs to further differentiate your business from spammers and other illegitimate senders. As fraudulent “phish” emails and other deceptive practices endanger consumers and businesses, authenticating your email is one positive step you can take today to make the email world a better place.
How Does Authentication Work?
There are two main methods of authentication that you should implement:
DMARC - Domain Message Authentication, Reporting, & Conformance
DMARC is a set of instructions passed along to email providers along with your SPF and DKIM authentications. It contains directions for ESPs to allow, quarantine, or block messages from your domain that do not authenticate properly.
DMARC is important because it tells email providers that you are serious about message security and authentication. If another sender pretends to send from your domain, DMARC provides instructions for how to handle these messages. This is most important for institutions like banks and schools, who handle sensitive private data, but including DMARC will help anyone's deliverability and sender reputation.