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Square envelopes are all about symmetry and balance, and each of the styles available is highly appealing to the eye. Choose a size from miniature 3 1/4" Square Envelopes to calendar sized 12 1/2" Square Envelopes. Most styles have square flaps, but a few have deep triangular contour flaps that nicely offset the Square Envelope. Select from several weights, sizes and a rainbow of colors, including some metallic square envelopes for an especially elegant touch. Keep in mind that when mailing square envelopes through the USPS, you will need additional postage because of the shape.

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This is a great product! The sticker seal expedited my process.

Oct 27, 2015

—Liza

70lb. Bright White

Needed a 5.5" x 5.5" square envelope for a custom baby shower invitation I was making. This is a quality, medium weight envelope that will require additional postage . The transaction was smooth, correct billing and fast shipping. The product met my expectations.

Sep 14, 2015

—Laurie

Natural Linen

I wanted a classy, upscale envelope for sending marketing materials to wedding planners and event planners - and this item really did the trick. Beautiful presentation, especially for the price. Helps greatly that you can order in small quantities.

Sep 12, 2015

—Herb

These envelopes are exactly what I needed for the square comp cards I designed and printed. Beautiful paper, very attractive presentation. Couldn't be happier - especially for the price.

Sep 12, 2015

—Herb Perone

Loved them! Th3y are just the size I needed for my greeting cards!

Sep 11, 2015

—Mildred Brown

I'm very pleased the way Envelope.com handle my order. The Customer Services is awesome !!

Sep 9, 2015

—Hanson Shiu

70lb. Bright White

Envelopes were perfect and arrived in excellent time. Thank you. Glad to know that you are there for future needs. Love the fact that you have so many options.

Sep 8, 2015

—Donna Potharas

70lb. Bright White

The service was great, and the product exceeded my expectations!!

Aug 27, 2015

—Shana Halan

Envelopes.com's website is very user friendly. It is very easy to place orders and the order shipped the same day.

Aug 26, 2015

—David Reece

Envelopes.com's website is very user friendly and very easy to find what you are looking for. Our order shipped the same day that we placed the order.

Aug 26, 2015

—David Reece

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