You can't disable as far as I know. Why don't you create an Email in Genesys Cloud to use in the configuration? When it comes into an Email flow, you can get this from the body where you can pull out the Email and Email back instructions to the user that they should go to the website.
User Information
Id: 056a0b5b-c366-426c-95b4-66399d8e984e
Name: Robert Wakefield-Carl
Email: robert.wc@ttecdigital.com
Station:
Last Station:
Phone: robert.wc@ttecdigital.com+19492685104
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Robert Wakefield-Carl
ttec Digital
Sr. Director - Innovation Architects
Robert.WC@ttecdigital.comhttps://www.ttecDigital.comhttps://RobertWC.Blogspot.com------------------------------