Expand Event
Fired for every email address returned by the server when the Expand method is called.
Syntax
ssmtp.on('Expand', listener: (e: {readonly address: string}) => void )
Remarks
This event is fired for every email address as returned by the mail server when the Expand method is called.
The Address parameter may contain a name and an email address or just an email address, suitable for any of the addressing properties.