JotForm Submissions no longer coming through to my email

Just recently we haven't been receiving the submission emails when someone submits their form. Has something changed recently that we need to make sure we are aware of?

Customers are still able to submit them, they get the "Thank you for your submission" and I'm seeing them in the back end of Jot Form, we just stopped getting the email of the submission.

I checked your last form ID here https://www.jotform.com/80956318385164. You have three recipients in it. The first recipient in the list is not showing up any from our logs. The other two are receiving emails as usual. 

You can check your email logs through email history section of your account, guide here https://www.jotform.com/help/293-How-to-view-all-your-form-Email-History.

Since our system has sent the emails, they may have been caught as spam, so kindly check with the respective owners of the email address to see if they can find the emails on their spam folder. If nothing, I would recommend the following changes/troubleshooting:

1. Create one email template for each recipient. You can just clone the current template, and edit each to have one recipient each. 

2. Temporarily disable "Send Uploads as Attachment" option in the Advanced tab for both Comcast emails. I would like to establish if Comcast is blocking emails due to its attachment. 

3. Lastly, ask them to check with Comcast to see if they can help with this problem, like whitelisting incoming emails from Jotform.

I hope that helps. Please let us know if you need further assistance.