A1 Envelopes | Small Invitation Envelopes in Many Colors


Order A1 Envelopes and get FREE shipping! Small invitation envelopes, perfect for mailing RSVP cards, or invitations in conveniently sized envelopes. Grab your recipient's attention by choosing from a variety of bright and pastel colors or stick with white or natural for a classic look. These A1 envelopes measure 3 5/8" x 5 1/8" and feature a square flap with side seams. This is the perfect size for mailing a 3 1/2" x 5" RSVP or return card. Great for birthday parties, wedding invitations, baby showers or any special event where an invitation is used.

Save time and personalize your A1 envelopes, by pre-printing a return or mailing address directly on the envelope. Place a custom order to print artwork, contact information, or other information directly onto your envelopes. A1 envelopes are the perfect small invitation envelope for a variety of uses. Use to include a return or RSVP card within a larger envelope, or for mailing small invitations. The heavier weight paper will give your invitations a high-quality look and feel.Use the standard gum seal to secure your invitations. This envelope fits nicely inside of an A6, A7 or larger sized envelope.


A1 Invitation Envelopes


Printed A1 Invitation Envelopes


All Invitation Envelopes

We offer a wide selection of invitation envelopes in a variety of styles, sizes, and colors. We can personalize all envelopes to your exact specifications to make your event truly special. Shop Invitation envelopes.


All Colored Envelopes

Shop by color. Need to match your invitation? We offer a wide selection of colored envelopes in a variety of styles and sizes. If you are looking for a certain color, check out our colored envelopes here. Shop Colored envelopes.


Not finding what you need? Have a question about a printed order? We would love to see if we can make your order - and life - a little bit easier.


A1 Envelopes Size Guide

Not sure what size you need? Our guide can help you pick the right invitation envelope for you. As a general rule of thumb, you will want to select an envelope slightly larger than your insert, to make it easy to insert and remove your item. Depending on the thickness of your insert, you may need more or less room around the item.

  • A1 - 3 5/8 x 5 1/8 - Typically used for an RSVP envelope. Fits inside an A6, A7, or larger.
  • A2 - 4 3/8 x 5 3/4 - Typically used for an RSVP envelope. Fits neatly inside an A6, A7, or larger envelope.
  • A4 - 4 1/8 x 6 1/8 - Often used for 4x6 photos or invitations. Fits inside an A7, A8, A9 or A10 envelope.
  • A6 - 4 3/4 x 6 1/2 - Commonly used for invitations up to 4 1/2 x 6 1/4. Fits inside an A7, A8, A9 or A10.
  • A7 - 5 1/4 x 7 1/4 - Also known as a 5x7 envelope. Used for many standard cards and invitations.
  • A8 - 5 1/2 x 8 1/8 - Used as an outer envelope. Fits a card, invitation, or insert up to 5 1/4 x 8 inches.
  • A9 - 5 3/4 x 8 3/4 - Used as an outer envelope. Fits cards, invitations, or inserts up to 5 1/2 x 8 1/2.
  • A10 - 6 x 9 1/2 - Also known as a 6x9 envelope. Outer envelope which fits inserts up to 5 7/8 x 9 3/8.

Need Something Special?

If you need special envelopes, or a certain color, or paper, please Contact Us for more information. We have a variety of items available for special order, that are ready to ship in just a couple days.

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