I wouldn't remove Mail, since it's the only built-in way to switch your default mail client, and reinstalling it is a pain.
I really wouldn't remove any of these apps, since they don't take up too much space and aren't really intrusive. Even if you're really hurting for space, the combined storage you'd get bak would be what, 0.1% of your total capacity? Never is a long time, and you (or someone you come to share your computer with) might want them eventually.