| Action Envelope: Printed or plain, in all sizes, styles, and colors. |
| American Printing and Envelope Company: Specializing in translucent and transparent envelopes, glassines, vellum, and parchment. |
| Brandywine Envelope Corp.: Full service supplier of envelopes and specialty envelope products. Specializing in custom printed window envelopes, numbered coin envelopes, and tyvek specialty envelopes. |
| Custom Envelopes.com: Business and specialty envelopes. |
| Envelope Mall: Offers specialty envelopes and stationery in many different styles and finishes. |
| EnvelopesDirect.com: Imprinted envelopes for business uses. |
| Gaw O'Hara Envelope Co.: Envelope manufacturer of custom and direct mail envelopes including full view window envelopes. |
| Madison Commercial: Suppliers and printers of all sizes and types of envelopes. Based in UK. |
| Miracle Envelope & Specialty Papers, LLC: Offering announcement, specialty, and shipping envelopes both blank and printed. Includes business sheets and papers. |
| Nationwide Envelope Company: Standard and specialty envelopes. All colors, shapes and sizes available. |
| North Dakota Envelope Company: Standard and custom printed envelopes of all shapes and sizes. |
| Office Express, Inc.: Business and personal envelopes. Customizing services available. |
| Quality Envelope & Printing Co.: Offering window envelopes, commercial envelopes, business reply envelopes, self-sealing envelopes, business stationery and more. |
| Regent Envelopes: Manufacturer of both business and greeting card envelopes. |
| Walsh Envelope Company: Source for stationery and business supplies. |
Classical
