Java EE (Java Enterprise Edition) General Discussion

Hello,

I am going to use JavaMail 1.4.2 in web application. (WEB-INF/lib/mail.jar).
It is deployed to IBM WebSphere application server 6.1.
So I have questions concerning this:
- is the JavaMail 1.4.2 compatible to WebSphere 6.1 environment? If not
then which JavaMail instance should I use in there? And where can I take it?
- whether I should add JavaBeans Activation Framework (activation.jar) to the
application's lib.

A lot of thanks for any feedback.