Email template library in Java

I know that there is a library called FreeMarker that can create email templates for Java Do you think this library is suitable for use in enterprise projects? Are there any other libraries that can create e-mail templates for Java?

Solution

FreeMarker works well and is very powerful Velocity has simpler syntax, less functionality, and more tolerance Nulls (unfilled variable)

I've used both, and velocity is easy to use FreeMarker (although more stringent) provides more information on "correctness" and facilities