Here’s a secret: I don't always feel as friendly, knowledgeable and responsive as I sound when it comes to tech support e-mails. I just have a little tool that helps me out: Microsoft Office 2007 Quick Parts.
It’s a small tool that’s part of Outlook 2007 that saves phrases or images that you might frequently include in outgoing e-mail messages. You can select that snippet from your personal library to insert into messages whenever you want.
I use it for signoffs (“If you need to contact me, my info is below”) tech support hints (“If you need a reminder of your password, click the link that says Forgot Your Password”) or any other little things I frequently repeat.