Form "on success" email no longer sending

Form "on success" email no longer sending

Hi,

I have a simple Form setup on my Zoho website that will send the input to my administrator email as well as another email address.

As of today - neither addresses are receiving any emails with the input. However the forms are successfully being submitted and received into the database. Just today so far, was working this last Friday.

Any ideas? Need any other info to help me?