Hello,
Thank you for your response. We already had checked spam folders, and I also had tested this form with 3 independent mail servers (one being gmail) and I was still experiencing the same issue. I also disabled other plugins and tested one-by-one and there seemed to be no plugin conflicts. So that leaves me wondering if there is any other possibility of an issue? I had to take the form down from the page. It was working fine and my client says the last time they received anything from the form was on April 16th, 2013 and it has not worked since but we the issue had not been brought to our attention until 2 days ago. Any help would be greatly appreciated.
Thank you!