I have a custom function that creates a Zoho Project for every Quote attached to a Deal when it moves to Closed Won.

Everything works fine, except for the fact that connecting a Zoho Project to the CRM automatically takes the Contact associated with the Deal and adds them as a Client User in Zoho Projects.

I wouldn't really care except that these Contacts also automatically get an invitation email to Zoho Projects. 

I have contacted support, but they said that unfortunately, this is just the way it is. If anyone has suggestions for workarounds, I'm all ears.

Thanks