Envelopes are very important as the materials contained within them. Professionally printed full-color envelopes bring a radiance to your corporate correspondence and direct-mail communications. It should be personalized to match your letterhead in a corporate setting and encourage prospects to open and read your sales letter in a direct-marketing.
Doing a mailng and trying to keep our postage down, then pick our standard stock.
More profesionals and thicker feel required then go with the Premium stock.