Do you like hiding the dock but do you still want to keep an eye on your email & contacts?
Check out these Mac Menu Bar Email & Contacts Apps:
Be notified right away when unread messages come in. Mail Mini is a simple email notifier that supports mail providers that use IMAP.
MailTab lets you instantly access your Gmail account without having to open your web browser. It gives a mobile view of your inbox as a drop-down in your menu bar. You can read, reply and manage your inbox without having to open Gmail in your browser.