Package sun-mail: Information

The JavaMail API provides a platform-independent and
protocol-independent framework to build mail and messaging
applications. The JavaMail API is available as an optional
package for use with Java SE platform and is also included
in the Java EE platform.
The JavaMail 1.4 release includes many API improvements
approved by the Java Community Process via JSR-919. It also
includes improvements in MIME parsing performance and support
for parsing and constructing Delivery Status Notifications.
Note: You will also need the JavaBeans Activation Framework
(JAF) extension that provides the javax.activation package.
We suggest you use version 1.1 of JAF, the latest release.