Authentication
The process of proving to inbox providers that your emails really come from your domain. It helps stop spoofing and keeps more of your messages out of spam.
Authentication is how you show inbox providers that your emails are real and tied to your domain. It gives them a clear signal that the message is safe and not a fake copy. With the right settings in place, your emails look trustworthy from the moment they are sent.
When authentication is set up correctly, more of your emails land in the inbox instead of spam. It protects your brand from people who try to send messages that look like they came from you. It helps build a strong sending reputation over time, which keeps deliverability stable.
To get started, set up SPF and DKIM with your email provider and DNS host. Then add DMARC once you are confident things are working, so you can see how your domain is used. Review your records any time you add a new tool that sends email so nothing breaks by accident.