Web: Even a simple email can be annoying to write -- especially if you aren't quite sure how to put your delicate matter. Canned Emails takes common problems and makes an email template for you.
These emails aren't complex, but get the point across politely. Customer service agents use templates like this all the time to offer apologies and refunds, and most of these templates follow that professional format (like following up on a phone call or cancelling a service). Some are personal, though, like asking someone to pay you back. If you stress over wording of basic emails, import some of these into your favourite text-expanding program and tweak them to your liking. They won't be perfect for everyone, but they're a good starting point.