This plugin is awesome if you wanna get your hands dirty, as there's great scope to customise the look and feel to exactly the way you want. Takes a little bit to get to get the hang of, so it's not for the faint hearted. But if you stick with it, you'll become a fan very quickly.
I love the new Send Mail (WP Mail)feature!! It works awesome with WP Better Emails and SendPress: Email Marketing and Newsletters.