javax.mail.internet
Интерфейсы 
MimePart
SharedInputStream
Классы 
ContentDisposition
ContentType
HeaderTokenizer
HeaderTokenizer. Маркер
InternetAddress
InternetHeaders
InternetHeaders. InternetHeader
MailDateFormat
MimeBodyPart
MimeMessage
MimeMessage. RecipientType
MimeMultipart
MimePartDataSource
MimeUtility
NewsAddress
ParameterList
PreencodedMimeBodyPart
Исключения 
AddressException
ParseException