The Java Mail API 1.4.1 supports JDK 1.4 or higher version. Current version of Java Mail API can be downloaded from the link given below:http://java.sun.com/products/javamail/downloads/index.html
Installing Java Mail API
Steps to install Java Mail
1. Unzip the javamail-1_4_1.zip archive.
2. Set CLASSPATH to include the "mail.jar" file obtained from the download
For read more information on Java Mail API visit to :http://www.roseindia.net/javamail/