Email Authentication

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What is Email authentication?

It is an advanced method to authenticate your email sending domain so that it'll allow our servers to accept and send emails on your behalf. This makes a smooth flow of emails passing through anti-spam filters and validates that your email is genuine.

Ultimately, it checks the legitimacy of the sender and prevents the sender’s email to get landed in spam folder/ junk box.

Different methods of email authentication

SPF/ Sender ID -It is a simple procedure to specify the mail servers (in our case it is allowed to send mails for this domain. This is done by publishing the text records in DNS settings. Learn more about SPF   

DKIM/ Domain Key - It is the most advanced protocol and is widely used by mail service providers. It allows the sender to sign their email by using digital signature in the header. Learn more about DKIM  

Authenticate email sending domain

Authenticating your email sending domain takes 4 simple steps to setup your SPF/ Sender ID and DKIM/ Domainkey records in your domain’s DNS settings.

To add email sending domain,

  1. Add domain
  2. Generate SPF and DKIM records
  3. Setup TXT records in your domain’s DNS settings
  4. Verify your domain

To generate the SPF/ DKIM text records,

  1. Go to Settings module > Email Authentication.
  2. In Email authentication page, click Add New Domain button.
  3. It’ll prompt you to a page to enter the domain name that you will be sending emails from (For example, if your email is, enter
  4. Click the Add button to proceed.


  • If the SPF TXT record already exists, please add to the record.
  • For DKIM public key, you need to copy the subdomain mentioned in the SPF/DKIM page and paste in your domain's DNS followed by the addition of public key to it.

To setup SPF/ DKIM text record in your domain’s DNS settings, click here  .

  To verifying your SPF and DKIM text records were added correctly,

  1. To view the SPF and DKIM text records, click the hyperlink SPF/DKIM Setup Details .
  2. You’ll get a popup page displaying the SPF text record and DKIM public key text record.
  3. So your SPF/Sender ID text record would look like this:

    "v=spf1 ~all"

  4. Copy this SPF TXT record and setup in the text record of your domain’s DNS settings.

  5. Your DKIM public key would look like this:

  6. Copy this DKIM public key in a subdomain of domain’s DNS settings.


  • If you will be sending emails through SkyDesk Campaigns for more than one domain, you need to repeat the steps above for each domain.
  1. Go to Settings module >> Email Authentication.
  2.  In Email authentication page, click the hyperlink Verify.
  3.  If the SPF/ Sender ID records were added correctly, it’ll show as checked in green color.