Web, domains and email
DKIM
Abbreviation for DomainKeys Identified Mail
In short and in plain language
DKIM is a method for email.
Outgoing mail gets a digital signature from the domain that sends it.
The person who gets the mail can then check if it was changed on the way.
This helps the emails of a business to arrive.
Definition
DKIM is a method that adds a digital signature from the sending domain to outgoing emails. The recipient can check whether the message was altered on the way. This supports the delivery of a business's emails.