DKIM (DomainKeys Identified Mail) is an email verification technology that can be used to detect fake emails. DKIM adds a digital signature to the email. Thanks to it, mail providers can check that the message was sent from the specified domain.
A DKIM signature is a TXT record that is added to the site's DNS zone settings. The entry itself looks like this:
us._domainkey TXT v=DKIM1; k=rsa; p=XXXXXXXXXXXXXXXXXXXXX,
where v — DKIM version, always takes the value v=DKIM1;
k — key type, always k=rsa;
p — unique code that can be generated in the mailing service.
Protects from scammers
A DKIM signature will prevent spammers from sending emails on your behalf. Together with SPF and DMARC, this technology will protect your subscribers from fraudsters, including identity theft.
Increases deliverabilityDKIM improves domain reputation. Using DKIM, the receiving server determines the authenticity of the sender and its overall rating. Emails with a good reputation are more likely to end up in the inbox.
DKIM works like an ID: you present it to the mail provider, and he lets you into the inbox.
Gives access to postmastersPostmasters are mail services for mailing analytics. They help track deliverability, opens, unsubscribes, and spam complaints. To enable statistics in the postmaster, you must have email authentication configured. DKIM is one of the components of email authentication.