Thrown when the Pop3Client is being used in an invalid way.
This could for example happen if a someone tries to fetch a message without authenticating.
For a list of all members of this type, see InvalidUseException Members .
Public static (Shared in Visual Basic) members of this type are safe for multithreaded operations. Instance members are not guaranteed to be thread-safe.
Assembly: OpenPop (in OpenPop.dll)