Subdomains can often be easier to configure and can sometimes be more effective at preventing email from being marked as spam. It is important to remember that emails sent from a subdomain will also appear in the “from” field of your emails, so make sure to use an address that is recognizable to your audience. We recommend sending from a subdomain like:
  • hey.company.com
  • mail.company.com
  • updates.company.com Whichever you choose, you can always update it later in your Domain Settings.