Returns true if a contact has newsletter unsubscription activity for specified newsletter.
            
Namespace: CMS.DataEngineAssembly: CMS.DataEngine (in CMS.DataEngine.dll) Version: 8.0.0.0 (8.0.5239.26125)
Parameters
- contactId
 - Type: 
System Int32
Contact ID 
- newsletterId
 - Type: 
System Int32
Newsletter ID 
- siteId
 - Type: 
System Int32
Site ID 
Return Value
Type:See Also