Note: this trick only works for Firefox users. Apologies to Internet Explorer and Safari users. There is a Chrome extension for WiseStamp as well. There are tricks that you can use with certain email providers to do the same thing, I just don't know what they are.
I send a lot of emails and a lot of them are queries which are basically just the same, slightly-tailored letter over and over again. I keep them pasted in a Word document for easy access. Now I have an even easier way.
Firefox has an add-on called WiseStamp. It allows you to create multiple signatures and easily insert them to a wide variety of email programs including Hotmail, Gmail, Yahoo, and more. It also allows you to create signatures for other things such as Facebook, Twitter, and AIM.
Just download the add-on and a little icon will appear in the bottom right corner of your browser. Click on this and click "Edit signature." Put what you want your canned email to be in the box on the page.
Now to insert the canned email, just open up a new message on your favorite email program. A similar icon should appear above the text box. Just click on it, click on the name of the signature you want to insert, and there it is! All you have to do is make the required tweaks, put in a subject and address, and hit Send. =D
Unfortunately it seems that you can only have two signatures (default labeled "Personal" and "Business" though this can be changed) so you could do two different forms of your query, or do one plain query and one query with sample pages.
What a neat add-on, Rachael! I could see that being really useful. Once you send a test query to yourself and get it all dialed in you shouldn't have to worry about formatting or typo issues either, just personalizing the query. Awesome!