When a contact opts in to phone calls.
                        
                        
                            
                            Sets contact property OptOutEmail to true for all contacts with specified emails or dsids.
                        
                        
                            
                                Create or Update a Contact
                                    
                                
                             
                            DailyStory supports custom fields to allow you to store virtually any data with a contact....To update a contact's custom fields, include the custom field data in the JSON body of your POST:
While not required, we recommend custom field key is lower case, contain no spaces, and are limited to alphanumeric characters.