Sends a NOOP command to the server.
MailBee.NET (in MailBee.NET.dll) Version: 12.2.0 build 630 for .NET 4.5
Public Function Noop As Boolean
if the method succeeds; otherwise, false
This method is useful for keeping the connection alive when there is no real activity.
However, some POP3 servers may ignore this command and still close the connection.
If this is the case, you may use Noop2