we have a client who has requested we send the notice of ACH returns by non-secure email, as it is a bear to go through the process of signing in.

not for sure what we can do here, our policy is to send any electronic notice securely. anyone have any ideas here?

Tell them no.

You can almost always find alternate ways to handle business processes, but how much are you willing to pay for an alternative? If this customer is extremely profitable, then you will find a solution. For everyone else, Randy supplies your answer.