This may be due to your site sending mail via the server.
Option A: Try a SMTP method or alternate email delivery provider.
We do not recommend using the normal ways of sending mail from your website through our server. We do recommend you use a free SMTP plugin, or use our Lite Maintenance Plan ($6/mo) to enable secure mail routing through our off-server mail system, Mailgun.
Option B: Check your spam/junk folder for missed mail.
Our server (not unlike many other hosting companies) is not recognized by many email providers and mail from it is often mis-flagged as spam.