No Emails-Script Killed

I was getting comment notification emails till yesterday(in fact lots of them).I suddenly stopped getting any emails from wordpress like comment notifications and contact forms.

My blog is hosted on GoDaddy and have Godaddy’s Economy plan for Shared Hosting.

I think the excess of comments probably used up lots of resources and my host might have killed the script.

How do I start getting emails again/restart the killed script?