| Address | This abstract class models the addresses in a message. |
| AuthenticationFailedException | This exception is thrown when the connect method on a Store
or Transport object fails due to an authentication failure
(e.g., bad user name or password). |
| Authenticator | The class Authenticator represents an object that knows how to obtain
authentication for a network connection. |
| BodyPart | This class models a Part that is contained within a Multipart. |
| FetchProfile | Clients use a FetchProfile to list the Message attributes that it
wishes to prefetch from the server for a range of messages. |
| FetchProfile.Item | This inner class is the base class of all items that can be requested
in a FetchProfile. |
| Flags | The Flags class represents the set of flags on a Message. |
| Flags.Flag | This inner class represents an individual system flag. |
| Folder | Folder is an abstract class that represents a folder for mail messages. |
| FolderClosedException | This exception is thrown when a method is invoked on a Messaging object
and the Folder that owns that object has died due to some reason. |
| FolderNotFoundException | This exception is thrown by Folder methods, when those methods are
invoked on a nonexistent folder. |
| Header | The Header class stores a name/value pair to represent headers. |
| IllegalWriteException | The exception thrown when a write is attempted on a read-only attribute
of any Messaging object. |
| Message | This class models an email message. |
| Message.RecipientType | This inner class defines the types of recipients allowed by the
Message class. |
| MessageContext | The context in which a piece of Message content is contained. |
| MessageRemovedException | The exception thrown when an invalid method is invoked on an expunged
Message. |
| MessagingException | The base class for all exceptions thrown by the Messaging classes. |
| MethodNotSupportedException | The exception thrown when a method is not supported by the
implementation. |
| Multipart | Multipart is a container that holds multiple body parts. |
| NoSuchProviderException | This exception is thrown when Session attempts to instantiate a
Provider that doesn't exist. |
| PasswordAuthentication | The class PasswordAuthentication is a data holder that is used by
Authenticator. |
| Provider | The Provider is a class that describes a protocol implementation. |
| Provider.Type | This inner class defines the Provider type. |
| ReadOnlyFolderException | This exception is thrown when an attempt is made to open a folder
read-write access when the folder is marked read-only. |
| SendFailedException | This exception is thrown when the message cannot be sent. |
| Service | An abstract class that contains the functionality common to messaging
services, such as stores and transports. |
| Session | The Session class represents a mail session and is not subclassed. |
| Store | An abstract class that models a message store and its access protocol,
for storing and retrieving messages. |
| StoreClosedException | This exception is thrown when a method is invoked on a Messaging object
and the Store that owns that object has died due to some reason. |
| Transport | An abstract class that models a message transport. |
| UIDFolder.FetchProfileItem | A fetch profile item for fetching UIDs. |
| URLName | The name of a URL. |