Open Mail window

Here’s something that has annoyed me ever since I got a Mac: when switching applications using the keyboard (e.g. ⌥-Tab), choosing Mail would not actually open a window if there wasn’t one open already. It seemed this was only good for switching to windows, not applications.

Although this bugged me, I never got round to finding a solution, until now. It struck me that you can switch between mailboxes using ⌘ and a number key. So ⌘1 will actually open my Inbox nicely.