The email system uses the domain name as the sender address for sending emails, so it is essential to have a domain name that can be configured with DNS records as the sending domain.

For example, if your company’s website is www.abc.com, we recommend using a subdomain (xxx.abc.com) of the primary domain (abc.com) as the sending domain. This subdomain must not have any other DNS records. (The “xxx” can be customized, such as mail, edm, etc., meaning the second-level domain of abc.com could be mail.abc.com or edm.abc.com, etc.)

**Benefits of successfully configuring a sending domain:**

– Eligibility to become a paid user.
– QQ Mail will not display “on behalf of” when sending emails.
– Better email deliverability and improved reputation of your domain with ISPs.