What Size is an A2 Envelope? Your Guide to Proper Envelope Sizing

Key Summary:

• Learn what an A2 envelope is and how it compares to other popular envelope sizes.
• Discover common use cases, ideal scenarios, and industries that rely on A2 envelopes.
• Get expert tips on choosing, customizing, and maximizing your experience with A2 envelopes.

A2 envelopes strike the perfect balance between compact size and elegant presentation, making them a favorite for stationery, invitations, and greeting cards. This guide offers a comprehensive look at the dimensions, best uses, and unique advantages of A2 envelopes. Whether you're preparing personal correspondence or professional mailers, understanding A2 sizing and features will help you choose the right envelope for every occasion.

An A2 envelope is a small but versatile envelope that fits cards or stationery measuring up to 4.25 x 5.5 inches. It’s often used for invitations, thank-you cards, and photo prints. Despite its compact appearance, the A2 is professional and elegant—perfect for both personal and business applications.

The standard dimensions of an A2 envelope are 4 3/8 inches by 5 3/4 inches. This sizing allows it to snugly fit a quarter-folded 8.5 x 11 sheet of paper or a notecard measuring 4.25 x 5.5 inches.

• Ideal for hand-delivered or mailed cards
• Offers a professional look while remaining compact
• Perfect fit for many off-the-shelf card designs and notepads

• Envelope Size: 4.375" x 5.75"
• Insert Size: 4.25" x 5.5"
• Flap Styles: Available in square, pointed, or euro flaps for style preference
• Materials: Ranges from smooth matte to textured or metallic finishes

A2 envelopes are used by individuals and professionals alike. They're a go-to solution for those seeking a stylish, compact envelope that doesn’t sacrifice formality.

• Stationery lovers who want to elevate handwritten correspondence
• Designers and artists mailing prints or mini portfolios
• Event planners sending RSVP or save-the-date cards
• Businesses using thank-you notes or branded follow-ups

A2 envelopes are perfect for situations that require compact, eye-catching presentation without compromising professionalism or personalization:

• Mailing RSVP cards for weddings and formal events
• Sending personalized thank-you notes or customer follow-ups
• Distributing handmade greeting cards or small photo prints
• Including product inserts or promo materials in direct mail campaigns
• Packaging mini-invitations or gift cards

• Sending mini prints, sketches, or proofs to clients in a sleek, branded format
• Sharing seasonal artwork or promotional postcards

• Mailing save-the-date announcements and RSVP cards
• Coordinating stationery suites with matching envelope colors and textures

• Adding handwritten thank-you notes to eCommerce shipments
• Using A2 envelopes as part of personalized customer retention strategies

Our A2 envelopes combine quality materials, design flexibility, and industry-standard compatibility. Whether you prefer classic white, colorful tones, or custom prints, our options help your mail stand out while ensuring functionality and durability.

• Printer-friendly formats compatible with inkjet and laser printing
• Dozens of color options, from soft pastels to bold hues
• Available in eco-friendly and recycled material formats
• Custom printing options including foil stamping and logos

Our A2 envelopes serve a wide array of industries and personal use cases:

• Wedding stationery sets (RSVP cards, save-the-dates, mini invitations)
• eCommerce thank-you notes and discount inserts
• Art print mailings and handmade greeting cards
• Event marketing materials and small product samples

Match your envelope style with your card design by selecting from matte, linen, metallic, or textured finishes that elevate your message.

Ensure your 4.25 x 5.5" cards or notes fit neatly and professionally by selecting the correct insert size.

Add logos, return addresses, or decorative touches for a polished, branded look that leaves a lasting impression.

Save time and money by purchasing your A2 envelopes in larger quantities for recurring campaigns or special events.

• A2 envelopes measure 4 3/8” x 5 3/4” and are ideal for cards sized 4.25” x 5.5”.
• They’re perfect for invitations, RSVP cards, thank-you notes, and artistic mailings.
• Our A2 envelopes are customizable, printer-friendly, and available in a wide range of styles and colors.

A2 Invitation Envelopes (4 3/8 x 5 3/4) - White 24lb

A2 Invitation Envelopes (4 3/8 x 5 3/4) with Peel & Seal - White Recycled 32lb

A2 Invitation Envelopes (4 3/8 x 5 3/4) with Peel & Seal - Premium White 32lb