Email Submissions Not Sending

Email notifications are not being sent when someone completes the form. 

This has been happening since yesterday morning. There are 4 other unanswered threads with the same issue on here and I have also asked in private message.

When is this going to be fixed? It's losing me business.

Hi, as mentioned on our twitter support account: https://twitter.com/JotFormSupport/status/689884707958439936, I will be answering on your private thread that you already have open on this subject here: http://www.jotform.com/answers/750541

Thank you.