Masking or Blocking Fields in a PDF Generated from a Form

Masking or Blocking Fields in a PDF Generated from a Form

We currently have a form on our website that is used to accept information from a tenant so that they can use ACH to have their monthly rent automatically withdrawn from their account. 

Some banks require the tenants to get a copy of the form that they filled out.  I know that within FORMS there is a way to send a copy of the information back to the tenant via email or a PDF .... however, the banking information is then submitted back to them insecurely in either the email or the PDF, so that won't work.  Is there a way to mask certain fields in an email and/or PDF response so that they do not show up or only partially show up in that email or PDF?  For example, I know that when I have submitted sensitive information on other websites, and gotten an email response, I may have submitted something like this:

Account #   012233459991

But then in the email response, gotten this:

Account #   xxxxxxxx9991

So the account number was protected and NOT sent via email or PDF.  How can I do something just like this through Zoho Forms??

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