If your domain is pointed to our nameservers (emails sent from an address hosted by ClubExpress) and you use blast emailing, the emails will come from your club's email address (for example, president@myclub.org) instead of mail2.clubexpress.com. This decreases the chances that your emails will end up in your members' spam folders. If you send the email from a private email address (such as myclub@gmail.com) the email will be sent from mail2.clubexpress.com.
If your domain is not pointed to our servers and you want emails to come from your club's email address, you will need to provide us with an SPF record authorizing us to send emails on behalf of that domain.