SpamHero is an excellent solution for customers at SiteGround that want premium spam filtering.

Here are the steps for setting up SpamHero with SiteGround:

1. Contact SiteGround and ask them to shut off an internal setting on their side that automatically shuts off local email delivery when it detects that your MX records have changed. If the SiteGround support representative doesn't know how to do this, try a different support representative or send them to this web page.

2. Review SiteGround's instructions for changing your MX records here:
   
   Changing Your SiteGround MX Records

3. Using the MX records assigned by SpamHero, login to your SiteGround account and update the MX records for your domain.