Email authentication is needed to verify the identity of the email sender in order to confirm that the sent email comes from the right source - the one which is listed as the sender.
Download a document about domain authentication here.
Changes in "From" Line
When you use our platform to send an email campaign and your own email address has been validated, your recipients will receive your email address shown in the “From” line, not our server domain. The result is the following line:
How to Authenticate a Campaign
After domain authentication when you send messages from this domain, the "Authenticate campaign" option will be available during the configuration of the sender at the first step of creating the campaign.
You need to authenticate your email in order to authorize/approve the campaign to be sent from your email address with our server entries, which will be later identified by the receivers in Gmail, AOL, Hotmail, Yahoo and MSN.
All major Internet and email service providers (later- ISP) use email authentication data to protect themselves against spam.
You can learn more about advantages of authenticated email domain in our blog articles "How to Improve Email Delivery to Gmail?" and "If You Send Emails from Public Domains, Agree with the DMARC Policy".