• Make Your Envelopes Stand Out : Try adding some special effects to your envelopes like printing envelopes emblazoned with graphics on the outside, print on the inside of the envelope, or even simply print your envelopes in four-color. Little additions like these can make a huge impact.
• Solutions for Differing Budgets: Large runs of 5,000 or more envelopes could lend themselves to customizing envelopes with engraving, printing and embossing. For smaller runs, the benefit versus cost of customization would need to weighed, since smaller runs of customized envelopes would not be as cost effective.
• When Designing Envelopes, Keep Postal Regulations in Mind: You’ll need to limit the use of both the return address information and any graphics to the envelope’s upper left corner in order to meet the regulations of the post office. Also, the envelope’s face needs to be left blank.

One thing to keep in mind is that when designing your envelopes a clear area of 3/8-inch at the top of a envelope should be built in to tear off easily without damaging the document inside.