/// <summary>
/// The MAPIFindNext function retrieves the next (or first) message identifier of a specified type
/// of incoming message.
/// </summary>
[DllImport("MAPI32.DLL", CharSet=CharSet.Ansi)]
public static extern uint MAPIFindNext(IntPtr lhSession, IntPtr ulUIParam, string lpszMessageType,
string lpszSeedMessageID, uint flFlags, uint ulReserved, StringBuilder lpszMessageID);