javax.mail.internet
Interfaces 
MimePart
Classes 
AsciiOutputStream
ContentDisposition
ContentType
hdr
HeaderTokenizer
HeaderTokenizer.Token
InternetAddress
InternetHeaders
matchEnum
MimeBodyPart
MimeMessage
MimeMessage.RecipientType
MimeMultipart
MimePartDataSource
MimeUtility
NewsAddress
ParameterList
UniqueValue
Exceptions 
AddressException
ParseException