Robust forms plugin that checks SMTP response?

I am having a hard time finding a wordpress Forms plugin that makes sure that a SMTP server has actually accepted the email that the form generates.

Basically the forms are quite critical in nature and I need to make sure to the sender that the form was not only submitted but also OKd by the SMTP or display an error message.

I am ok with a plugin that simply uses wp_mail but posts the verbose SMTP end result or the error and not just the default TRUE or FALSE.