List_Subscribe( string keyint listIdstring emailoptional struct optionalParameters)  

Note: When using one of the API wrappers, you do not need to pass the API key. The wrapper will pass the key for you, your first parameter should be the second parameter in the signature.


Add an email address contact to an existing list. 


  string key Your API key - used to authenticate your account
  int listId The ID of the list you want to subscribe the email address to
  string email The email address you are subscribing
optional struct optionalParameters A struct of optional parameters, see below for valid keys


bool True on success

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