Asks the server to return it's capability listing.
This is an optional command, which a server is not enforced to accept.

Return Value

The returned Dictionary keys are the capability names.
The Lists pointed to are the capability parameters fitting that certain capability name. See RFC section 6 for explanation for some of the capabilities.

Remarks

Capabilities are case-insensitive.
The dictionary uses case-insensitive searching, but the Lists inside does not. Therefore you will have to use something like the code below to search for a capability parameter.
foo is the capability name and bar is the capability parameter.

List<string> arguments = capabilities["foo"];
bool contains = null != arguments.Find(delegate(string str)
            {
                return String.Compare(str, "bar", true) == 0;
            });

Exceptions

See Also

Pop3Client Class | OpenPop.Pop3 Namespace