These free envelope templates already have artwork, just print and fold. Find decorated envelope templates in Word, Publisher, PDF, GIF, and JPG formats ready to download and print. You can also edit them your favorite graphics program if they aren't quite perfect for you. These are not necessarily all standard envelope sizes for mailing.
Also see these Blank Standard Card and Business Envelope Templates and Blank Craft Envelopes
Sampling of Envelope Templates at Creative Park
These PDF files include backgrounds and images plus extra images to add to your envelope. There are dozens of styles in quarter-fold size for A4 or US letter size paper. Great collection with many themes and colors.
Sampling of Envelope and Letterhead Templates at Paper Museum
This site is in Japanese. There are ten sets of matching envelopes and letterhead. The top button for each sample downloads a ZIP file with Microsoft Word documents (1 for letterhead, 1 for envelope template). The second button goes to an instruction page. I can't read it but the images explain it nicely. The third button is to purchase preprinted sets.
Envelope Templates at Microsoft Office Online
For use in Microsoft Word and Publisher, find a variety of envelope templates with color and graphics. Includes templates for invitations, business letters, gift cards, and lots of money envelope designs.
Sampling of Large Envelope Templates from Canon's Creative Park
Designed for half-fold letter size cards, download a PDF for A4 or US Letter size. These templates comes in a dozen colors and each PDF includes a few extra graphic images you can use to decorate your envelopes (use as seals, for example).
Sampling of Seed Envelope Templates at The Seed Site
You'll find dozens of templates for seed envelopes (which have many other uses as well). These templates have various designs such as flowers, plants, butterflies, and abstract patterns. At the bottom of the page are larger envelope templates.
The Allotment Junkies - 2 Seed Envelopes
The Allotment Junkies have two templates for seed envelopes. These are decorated, not blank templates. One has a fairy photo, the other a simple silhouette of a vase of flowers. Use for seeds or for other crafty projects.
The Allotment Junkies - 3 Seed Envelopes
http://allotmentjunkies.wordpress.com/2007/03/07/handy-free-seed-envelope-templates/ There are three templates here with simple artwork of flowers - one with birds too. From the Allotment Junkies.
The Allotment Junkies - 3 Colorful Seed Envelope Templates
From The Allotment Junkies, here are three colorful decorated templates. One has flowers, one has a hat and garden gloves, and one has a big sunflower. Great not only for seeds but for scrapbooking and other craft projects as well.
Tom Clothier Seed Envelope Templates
In addition to detailed discussion of seed envelopes there are 4 seed envelope templates, including one (Barfy Dog's) already decorated for you (edit the text in a graphics program).
Sampling of Envelope Liner Templates from Canon's Creative Park
Put the artwork on the inside. Tuck a liner into your homemade or store-bought envelopes for an extra flash of color when the recipient opens the envelope. These templates comes in A4 and US Letter sizes, as PDF files.