Update of fields via HTML Form as per Unsubscribe function

Update of fields via HTML Form as per Unsubscribe function

I current use code provided by Zoho to allow for automated unsubscribe from within my website (i.e. user supplies email address and form automatically updates the opt-out field associated with that emal within Zoho.
 
I would like to able to do something similar with other fields associated with a specific email address (e.g. by only supplying email address I would like to be able to automatically update any other field for that user).
 
Can anyone tell me if this is possible?
 
Mark