Domain authentication is more strictly enforced by Google and Yahoo. Anyone sending through this platform should ensure the following:
- You are sending from a domain that belongs to you or your organization. If you do not have a domain you can use, we recommend purchasing one as soon as possible.
- You authenticate your domain using DKIM, SPF, and DMARC, the three methods discussed in this document.
- You are following best practices with obtaining permission and respecting unsubscribes.
Your domain name is an important part of your business or organization's online identity, and sending email from your own domain is key to maintaining a relationship with your subscribers. To authenticate your sending domain means that receiving mail servers can verify that your email content hasn't been tampered with before it reaches the recipient. Even more importantly, it shows that the mail was authorized by somebody with ownership over the domain. It's a vital part of increasing trust with your subscribers, and assists in your deliverability.
For a deeper explanation of the technologies in the email authentication landscape, read ouremail authenticationdocumentation.