Custom Printed Envelopes – All Sizes

It depends on what you're mailing. For an 8.5" x 11" letter folded in thirds, use a #10 envelope. To mail 8.5" x 11" documents unfolded, use a 9x12 envelope. For 5x7 invitations, use an A7. For 4x6 photos or cards, use an A6, and for 4.25" x 5.5" RSVP or thank-you cards, use an A2. See the size chart above for every option.

The #10 envelope (4 1/8" x 9 1/2") is the most common business envelope in the U.S. It holds a standard letter folded in thirds and is used for letters, invoices, statements and checks.

Numbered envelopes (#9, #10) are commercial or business envelopes, long and narrow for folded letters. A-style envelopes (A2, A6, A7, A9) are announcement envelopes, closer to square and sized for cards and invitations.

Choose a window envelope when the address is already printed on your document, as with invoices, statements and payroll. Choose a non-window envelope for letters, marketing mail and invitations, where a printed or variable address looks more polished.

A security tint envelope has a pattern printed on the inside so the contents can't be read through the paper. Our Security Strip stock uses a blue crisscross pattern and includes a peel-and-seal strip. It's available on window envelopes and self-seal security envelopes.

Yes. Every envelope can be printed with your logo, return address, brand colors and artwork, in full color or 1 color depending on the size.

Variable addressing, where we print each recipient's name and address from your CSV list, is available on #10, #9, 9x12, A2, A6 and A7 envelopes. On A9 envelopes, it's available by custom quote.

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

Envelope converting is the process of turning flat printed sheets into finished envelopes by die-cutting, folding and gluing. Need a custom size? Request a custom quote.

Most of our envelopes can be ordered in quantities as low as 25, which is perfect for short runs, events and test mailings. Larger orders are available up to 25,000 on select products, or by custom quote.

Most envelopes ship in 2–4 business days, and select sizes offer faster turnaround. Variable addressing orders use standard turnaround.

Yes. Custom sizes, double windows, foil, custom flaps and other special requests are available through our custom quote form.

Most #10, #9, A2, A6, A7 and A9 envelopes mail at the regular letter rate (one Forever stamp up to 1 oz) when they're no more than 1/4" thick. 9x12 envelopes mail at large envelope (flat) rates. Square envelopes and rigid or bulky contents can add a surcharge.

Yes. Download free envelope templates in PDF, AI, InDesign, Photoshop and JPG/JPEG formats, with safe areas, bleed and window placement marked.

Nearly every industry, with different envelopes for different jobs:

• Accounting and payroll: security window envelopes and #9 return envelopes
• Healthcare, insurance and utilities: self-seal security and window envelopes
• Legal and professional services: linen #10 envelopes and 9x12 document envelopes
• Real estate and mortgage: 9x12 closing envelopes and A7 holiday card envelopes
• Marketing and retail: 9x12 and 6x9 catalog envelopes, and addressed #10 envelopes
• Nonprofits and churches: #10 appeal and #9 reply envelopes, and A7 or A9 gala invitations
• Schools and universities: 9x12 admissions packets and A7 graduation announcements
• Weddings and events: A7 invitation and A2 RSVP envelopes
• Photographers and online shops: A6 envelopes for 4x6 prints and inserts

Please send your mailing list as a CSV file (.csv). You can build it in Excel or Google Sheets, then choose File → Save As (or Download) → CSV.

Your CSV needs one header row followed by one recipient per row. Label the header columns exactly as follows:

• Column A: FULL NAME
• Column B: COMPANY
• Column C: ADDRESS
• Column D: SUITE/APT
• Column E: CITY STATE ZIP CODE

Just leave that cell blank, but keep the column in your file. All five columns (A to E) should be present in every list, even if some cells are empty.

No. Put the city, state and ZIP code together in column E, for example "GLENDALE CA 91202". Don't split them into separate columns.

Yes. We print each address exactly as it appears in your file, so check spelling, apartment numbers and ZIP codes before you upload. For best delivery results, USPS recommends all capital letters with no punctuation.

Excel sometimes drops the leading zero from ZIP codes like 02108 (Boston), turning them into 2108. Before saving, format column E as Text, or double-check any ZIP codes that start with 0.

No. The faster 1–2 business day turnaround isn't available for variable addressing orders. Your envelopes are produced on our standard turnaround, so plan your mailing date accordingly.

Yes. Variable addressing is a paid add-on, and the price depends on your order quantity. Select variable addressing in the price calculator to see your exact total before you check out.

Yes. We'll print any address you provide in the format above. Most customers mail to U.S. addresses, but for an international recipient, put the city, postal code and country together in column E (CITY STATE ZIP CODE).

Order at least as many envelopes as there are names on your list. Many customers add a few extra blank envelopes for last-minute additions or mistakes.

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