Browse by Category: All Custom Envelope Sizes Available
What is a Custom Envelope for Business?
A custom envelope is an envelope built just for you, stepping outside the usual off-the-shelf shapes and sizes. Unlike run-of-the-mill options, a custom job lets you pick the height, width, color, paper weight, print design, and extras such as window cut-outs or security tints.
Companies and private senders order custom envelopes to echo their brand, create a memorable moment, or handle mail that standard options simply cannot hold. From adding a company logo to matching exact brand hues, finishing with a shiny foil or boring-style seal, or building a carrier for an oversized invoice, these envelopes announce the contents long before a flap is peeled back.
Why Do We Choose Custom Envelopes?
Custom envelopes do more than hold sheets of paper; they speak for your brand, spark curiosity, and carve out a memorable first impression. Whether you slip in an invoice, an invitation, or a sales piece, a tailored envelope turns plain mail into something polished and hard to forget.
1. Branding & Professionalism
Because the envelope lands on a doormat before anything else, its face sets the tone. stamp your logo, trim it with your colors, and the recipient starts trusting your name-even before reading the letter inside
2. Stand Out from the Pile
Swarms of plain white envelopes crowd most mailboxes. a splash of planned color, an unusual flap, or a glossy finish shouts, Open me first! and pushes your message to the top of the recipients must-read list.
3. Tailored to Your Business Needs
Passing along a gift card? protecting a hotel key? mailing a hefty product guide? custom dimensions mean no bending, overstuffing, or awkward tears and the contents arrive exactly as you sent them.
4. Functional Features
- Security tints for confidentiality
- Windows for address display
- Peel & seal closures for convenience
- Clasp or string enclosures for reuse
- Specialty paper or finishes for added impact
Each extra feature keeps the mail safe, speeds up opening, or simply adds a dash of wow, making your envelope work harder for your message.
5. Marketing Power
Turn your envelope into tiny real estate-watch it work during transit. Slide in promotions, a quick-response code, a catchy tagline, or an urgent call to action ; even before the flap lifts, it starts delivering real value.
6. Unique Materials & Finishes
Pick from earthy kraft, soft-textured, recycled, or eye-catching metallic paper. Extra foil stamping, elegant embossing, or punchy full-color art-and suddenly the envelope feels as special as the words inside.
Common Custom Envelope Sizes
Custom envelopes can be made in virtually any size, but here are some popular standards:
| Envelope Type | Size (inches) | Common Use |
|---|---|---|
| #6 ¾ | 6.5 x 3.625 | Personal checks, bills |
| #9 | 8.875 x 3.875 | Business replies, small inserts |
| #10 | 9.5 x 4.125 | Business letters |
| #11 / #12 | 10.375 x 4.5 / 11 x 4.75 | Larger inserts, statements |
| A2 | 4.375 x 5.75 | Invitations, thank-you cards |
| A6 | 4.75 x 6.5 | Greeting cards |
| A7 | 5.25 x 7.25 | Announcements, photos |
| A9 | 5.75 x 8.75 | Large invitations, marketing |
| 9” x 12” | 9 x 12 | Catalogs, booklets |
| 10” x 13” | 10 x 13 | Large documents, reports |
| Custom Mini | 1” x 1” and up | Tags, sample pouches, novelty use |
When to Use Custom Envelopes
Custom envelopes are the right choice when you need to impress people on your first impression, support your brand, or cover special content. They are ideal in business correspondence, marketing, special events such as weddings or invitations, and product packaging easily used in key cards of the hotel, gift vouchers, or catalogs. They are also more convenient to use since custom envelopes can include extra features such as security tints on confidential papers or a peel and seal closing mechanism. You could be sending something special, or you just want to make an impression. Custom envelopes assist your message to be at a new level and delivered with power.
Perfect Custom Envelopes for All Event Purpose
We have a range of premium custom envelopes that we design at EconoEnvelope, which will help to make each piece of mail special. They are made out of high-quality paper, feature modern square flaps, and moisture-seal closures which make them add a classy look to holiday cards, wedding invitations, thank-you notes, and so on- making sure your correspondence looks exquisite.
Get Custom Envelopes for Your Stationery Needs
Finish your stationery using an envelope which fits well. In our line, five sizes of envelopes (square and rectangular) with five sizes are available in order to use any event. Its Petite Envelope (4.5x 6.25) suits magnets and miniature cards. A2 Envelope (4.375" x 5.75) is appropriate in case of RSVP cards and personal stationery. To use a square design, use the Standard Square (5.5 x 5.5) to use in case of a holiday card or save-the-date; or use the Grand Square (6.25 x 6.25) to use in case of a square wedding invitation. The flexible A7 Envelope (5.25 x 7.25) is ideal in invitations, announcements or greeting card purposes.
Always verify the size of the product in order to be the correct size. It is important to remember that the square envelope needs additional postage.
Premium Quality and ElegantOur customized envelopes are of three traditional colors: white, silver and speckletone kraft. The white envelope is slightly cream and has a soft, luxurious cotton feeling on a text weight of 100lb. The silver envelope also has fine shimmer at 80 lb. text weight that is very smooth. The kraft envelope is made of speckle tone and has a natural look that will only suit the modern or rustic stationery.
Our Customer Reviews
Our Business Mailings are just right!
We have got Custom envelopes made with our company logo on them at EconoEnvelope and we are very happy with them. The print quality is clear, its paper is of high quality and it gives added professionalism to all our client letters. Highly recommended!""
Rachel T
Office Manager, Boston
Scores of Quality at a Not So High Price
"We required Custom Windows envelopes at our monthly statements. EconoEnvelope provided us with high quality envelopes quickly - and at a far superior price to that of our former supplier. We sure will reorder soon!"
Derek M.
Owner of an Accounting Firm, Chicago
Speedy Service and Dependable Printing
"EconoEnvelope truly delivered when I placed a last-minute order for branded envelopes for an event. Their staff was incredibly prompt, and the turnaround time was impressive."
Angela Saron
Marketing Coordinator
Frequently Asked Questions About Custom Envelopes
EMAIL PROMO SIGN UP
Get our promotions and stay up to date on our newest products.
Your information is 100% safe. We hate spam too.
An industry leader in economical imprinted envelopes