New Email with Selection Service
Since I’ve been mentioning Services Manager for the first time, I’ve been following in love with a small little shortcut named "New Email with Selection". A built-in service provided by Mail.app that, well, creates a new email with whatever is selected in an app.
I often write emails in Vim or TextEdit or Bean or wherever, but getting my text into Mail.app was always a bit more complicated that I thought I would need.
Then I discovered [Services Manager] and "New Email with Selection" (found in Services (menubar) → Services → Messaging → New Email with Selection). This service takes whatever text is selected (from almost everywhere), opens Mail.app with a new email message containing the selection.
I even gave it a special shortcut (⇧⌃M). So. Helpful!