emailPopulatingBuilderNormal.withAttachment("location.txt","On the moon!".getBytes(Charset.defaultCharset()),"text/plain"); String base64String ="iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAABeElEQVRYw2NgoAAYGxu3GxkZ7TY1NZVloDcAWq4MxH+B+D8Qv3FwcOCgtwM6oJaDMTAUXOhmuYqKCjvQ0pdoDrCnmwNMTEwa...