Blank Envelopes in Bulk – 7 Sizes, 6 Paper Stocks

Seven sizes: #10 (4 1/8" x 9 1/2"), A2 (4 3/8" x 5 3/4"), A6 (4 3/4" x 6 1/2"), A7 (5 1/4" x 7 1/4"), A9 (5 3/4" x 8 3/4"), 6.5" x 6.5" square, and 9" x 12".

Use #10 for letters folded in thirds, A2 for 4.25" x 5.5" cards, A6 for 4x6 photos and cards, A7 for 5x7 invitations, A9 for 5.5" x 8.5" cards, 6.5" square for square cards, and 9x12 for unfolded 8.5" x 11" documents and catalogs.

White Premium Opaque (70lb and 60lb), White Linen Uncoated 70lb, White Natural Uncoated 70lb, Pearl Metallic 70lb, and Self-Seal Security Strip Uncoated 60lb with a blue security tint. Availability varies by size.

Pearl metallic envelopes have a soft, shimmering finish that catches the light. They're a favorite for wedding invitations, holiday cards and luxury brand mail.

Yes. Our Self-Seal Security Strip stock has a blue crisscross security tint inside, so contents can't be read through the paper, plus a peel-and-seal closure.

Yes. Choose no window or a standard address window. Window envelopes are ideal for invoices and statements where the address prints on the document.

Order from 100 up to 25,000 envelopes: 100, 250, 500, 1,000, 2,500, 5,000, 10,000, 15,000, 20,000 or 25,000.

Because there's no printing, blank envelopes ship quickly. Choose 2–4 or 5–7 business day turnaround.

Yes. Our blank envelopes have a smooth, writable surface for handwriting, address labels or rubber stamps. Many customers also run them through an office printer. Test a few first to make sure your printer handles the size and stock.

Yes. If you'd like your logo or return address printed, see our custom printed envelopes, with options like full color and variable addressing.

Yes. Custom sizes, flap styles, window sizes and positions, and double windows are available through our custom quote form.

Yes. USPS adds a nonmachinable surcharge to square envelopes like the 6.5" x 6.5", so they need more postage than a rectangular envelope of the same weight. #10, A2, A6, A7 and A9 mail at the regular letter rate up to 1 oz (when 1/4" thick or less), and 9x12 envelopes mail at large envelope (flat) rates.

Businesses and organizations that need a steady supply of envelopes on hand:

• Offices and small businesses: blank #10 envelopes for everyday letters, invoices and checks
• Accounting and payroll teams: self-seal security envelopes for paychecks and statements
• Stationers, invitation designers and print shops: A2, A7, A9 and square envelopes in linen, natural and pearl metallic stocks for card and invitation sets
• Wedding and event planners: pearl metallic and linen A7 envelopes for invitation suites
• Artists, photographers and Etsy sellers: A2, A6 and square envelopes for prints, cards and product inserts
• Schools, nonprofits and churches: #10 and 9x12 envelopes for letters, forms and packets
• Real estate, legal and medical offices: 9x12 envelopes for documents, contracts and records