Character Vector
Valid for: GetMail, SendMail
The to property contains a list of recipients of an e-mail. The recipients are specified as a comma-delimited list of e-mail addresses.
For the SendMail object, you should set this property before calling the SendMessage method. The default is an empty vector.
For the GetMail object, this property is read-only, and is valid only after you have called the GetMessage method to retrieve an e-mail from the POP3 server.