Java: How to create an EML or MSG file with attachment that can be opened in Outlook

I have a struts-action, and when that action is called i would like to create and return a simple eml or msg file that can be opened in outlook.

This is can do just fine with a basic email-message. I just saved an email as eml from outlook and studied its content. Then created a string in my action and returned it as a stream with the correct content-type and extension.

But when i would like to add an attachement to the message i guess i would need some help. Is the开发者_JS百科re any free api's out there that can help me construct a well-formed eml/msg file with an attachment?

Never mind. I found the solution myself.

Java Mail API is the way to go! It was so simple i cant belive i even considered buying a 3rd party exte