DoubleOptIn Enumeration
        
             
        
            
                It is used for setting the double
                opt-In option when adding subscriber. It is used as one of the parameters of methods
 addSubscriberByEmail, 
                    addSubscriberByInfo and   
                        addSubscribersByInfo.
        
            
            Members
                
        
            
                | 
                        
                        Member | 
                        Description | 
            
                | 
                        On | 
                        
                            Set double opt-in On | 
            
                | 
                        Off | 
                        Set double opt-in Off | 
            
                | 
                        ReferToUserOption | 
                        +Refer to your double opt-in option in Spread. | 
        
 
        
             
        
            * 
                When double opt-in is ON, confirmation letters will be sent to new/non-active subscribers once you add them into subscriptions.
        
            
                + To change your option, login to 
                http://www.rspread.com, 
                    My Account > 
            Double
                Opt-In
        
             
        
            
                See Also
        
            Spread Web
                Service NamespaceS
        
            
                SpreadWebService.addSubscriberByEmail Method
        
            
                SpreadWebService.addSubscriberByInfo Method
        
            
                SpreadWebService.addSubscribersByInfo Method