| BASE64 | Encodes and decodes text according to the BASE64 encoding. |
| CRLFInputStream | An input stream that filters out CR/LF pairs into LFs. |
| CRLFOutputStream | An output stream that filters LFs into CR/LF pairs. |
| EmptyX509TrustManager | Empty implementation of an X509 trust manager. |
| GetLocalHostAction | Privileged action to retrieve the local host InetAddress. |
| GetSystemPropertyAction | Privileged action for retrieving system properties. |
| LineInputStream | An input stream that can read lines of input. |
| Logger | Provides a simple logging mechanism for GNU inetlib and providers. |
| MessageInputStream | A utility class for feeding message contents to messages. |
| MessageOutputStream | An output stream that escapes any dots on a line by themself with
another dot, for the purposes of sending messages to SMTP and NNTP
servers. |
| SaslCallbackHandler | A callback handler that can manage username and password callbacks. |
| SaslInputStream | A filter input stream that decodes all its received input using a SASL
client. |
| SaslOutputStream | A filter output stream that encodes data written to it using a SASL
client. |
| StderrLogger | A logger that simply writes to System.err. |