Get help, request features, post bugs
Simple Java Mail is a robust library, but there's always room for improvement: suggest anything you can think of!
You can also refer to the API documentation.
If you need more general help, you'll usually get an answer by posting a question on StackOverflow.
You can find more about me on bennybottema.com. At the bottom of the page you can shoot me an email if you want a quick answer.