DKIM, or DomainKeys Identified Mail, is an important part of email security and spam protection. It provides a way to validate a domain name identity associated with a message through cryptographic authentication. Here are some reasons why you should use DKIM:
Authentication: DKIM allows the recipient to check that an email claimed to have come from a specific domain was indeed authorized by the owner of that domain. This is done using a digital signature linked to the domain name.
Phishing and spoofing protection: Because DKIM verifies that an email was actually sent from the domain it claims to be sent from, it’s much harder for phishers and spoofers to pretend to be sending from a different address. This helps protect users from malicious emails.
Improved deliverability: Many email service providers check for DKIM. If you don’t have it, your emails may end up in the spam folder or may not be delivered at all. Using DKIM can help ensure that your emails end up in your recipients’ inboxes.
Reputation: If your domain is known to use DKIM, it’s less likely to be blacklisted or considered a source of spam. This can be beneficial for your brand’s reputation.
Non-repudiation: Because the DKIM signature is linked to the domain name, it provides a form of non-repudiation. This means the sender cannot reasonably deny having sent the email.