Set up DKIM for email deliverability

The DomainKeys Identified Mail (DKIM) help protect email message senders and recipients from spam, spoofing, and phishing. DKIM is a means of increasing the deliverability of your email campaigns and your sender reputation, as it allows you to let the receiving mail server verify your reliability.

A. What is DKIM?

The DKIM gives an organization the opportunity to take responsibility for a message while it is in transit. The message is signed with the organization's certificate and a signature is added to the email headers. Many email clients (such as Yahoo!, Gmail, Outlook, and others) check for a valid DKIM signature on incoming email messages as a means of recognizing the originator.

When a mail server receives an email it assesses the DKIM header and then performs the following tasks:

  • Retrieve the public key from the DNS of the sending domain (re: if the sender is 
  • Use the key to decrypt the signature and verify the content.

B. Set up DKIM

Our platform supports setting up DKIM on your sender accounts but you or an administrator must have control over the DNS settings of your sending domain.

To set up DKIM:

  1. In the top navigation bar, click Account_icon.png and click Settings.NEWIntegration.png
  2. In the menu on the left, click Senders.
  3. In the SPF/DKIM column, you can see which senders have a valid DKIM signature indicated by a green check icon.NEW5Sender.png
  4. Click Set up SPF/DKIM for the sender address for which you want to set up a DKIM record.
  5. Click the Domain keys identified mail (DKIM) drop-down menu to display the DKIM records
  6. Copy and paste the information in the TXT record name and TXT record value fields to your domain's DNS records.
    Note: Depending on your hosting provider, you might need to make small changes to the provided records.
    Important: It takes between 30 minutes to 48 hours to finalize the process before you can move to the next step.
  7. Click Verify DNS record to complete the verification.