Email Notification Not Working On Form Submission

I am not receiving emails from submitted forms. From the More Actions menu > Set Email Notification area I have Enabled email notification and zoho.adminuserid is in the From field. The Include User Submitted Data box is checked.

I have also checked my spam box just in case it was ending there but it is not.

Is there a bug with this? Recommendations for troubleshooting are appreciated. Thank you.