https://community.hubspot.com/t5/APIs-Integrations/Using-POST-to-Create-or-Update-a-contact-from-Zoho/m-p/239476#M18372 <P>Ah, so I think your problem is not the email address, but instead that this endpoint (and most of our other endpoints) require the contact data to be passed in as JSON, not URL encoded.</P> <P>If you look at the example in the documentation you’ll see the contact fields are being passed in as a JSON block rather than in the request URL.</P> Fri, 10 Mar 2017 18:54:14 GMT Sarah_McG 2017-03-10T18:54:14Z