DKIM Configuration | Zoho Forms - User Guide

DomainKeys Identified Mail (DKIM)

DKIM is a security mechanism that validates an email, checking if emails were sent from a valid source and not tampered with during transit. DKIM ensures that emails will be delivered to the inbox of its intended recipient since the validity of the email has already been verified.

unique identity

Configuring DKIM

Before you send emails using an authenticated domain from Zoho Forms, you must add your domain and get it verified under Control Panel.

To configure DKIM,
  1. Log in to Zoho Forms and in the top-right corner, click the   icon to access the Control Panel.

    Control Panel icon
  2. Click DKIM Configuration under Notification Settings.

    DKIM Configuration
  3. To add a new domain, click Add New Domain.  
  4. Enter your domain details (for example,  in the popup, then click Add Domain.
  5. The domain status will be listed as Pending.
  6. Hover over the added domain and click View details.
  7. Copy the Hostname and Host value generated.
  8. Go to your DNS settings and add the Hostname and the Host value as TXT record and click Publish.
  9. Once done, in the DKIM configuration tab in Zoho Forms, hover over the domain again, and click Verify.
  10. The status will be changed to Verified

    DKIM Configuration-status

Sending Emails via Verified Domains

Once you complete the DKIM configuration and get your domain verified, you can use it to send emails from Zoho Forms.

  1. After creating a form, in your form builder, navigate to Settings > General > DKIM & SMTP.              
  2. Choose a DKIM authenticated domain from the Send email via dropdown. 
  3. Henceforth, all emails for this form will be sent from the selected domain.

Note: Only if your email address contains an authenticated domain name, emails will be sent using that domain. If not, emails will be sent using the default domain from Zoho Forms.

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