DKIM

DKIM, which stands for Domain Keys Identified Mail, is an email authentication protocol that allows a mail server to check that an email message was sent and authorized by the sending domain. It acts as an identity card for email sending to reassure mail servers that the sender is authentic and credible.

Set up email authentication protocols like DKIM, DMARC, SPF, and BIMI to improve email deliverability and increase the chances of landing in subscribers’ inboxes. Having the proper protocols in place also increases credibility in the eyes of inbox service providers (ISPs).