Best Self Seal Greeting Card Mailing Envelopes in 2026

Heavyweight 5x7 envelopes in White; Our A7 Envelopes are made from a bright white, heavy paper stock with a Vellum finish giving you a clean durable envelope for your wedding invitations, greeting cards, or postcards. Unlike the Competition, our envelopes are manufactured from start to finish right here in the USA!

Bright White Vellum Finish; Made to a 98 brightness, these envelopes give you clean look & premium feel that can be easily written on or printed with an Inkjet or Laser printer.

Standard A7 Size & Design; These white A7 envelopes are made to the standard A7 size of 5 1/4" x 7 1/4" and feature a Gummed Booklet Style Square Flap

Clasp envelope (100-pack) for filing, storing, or mailing documents

Double-prong metal clasp closure and reinforced eyelet keep documents securely contained

Moisture-activated gummed surface on flap creates a permanent seal

10 COLOR MINI ENVELOPES: Perfect sized paper envelopes for gift cards, wedding placeholders, name cards, gift cards, thank you notes, gift tags and more! They come in the colors red, orange, mustard yellow, green, purple, pink, blue, light, yellow, light green, and lavender.

GREAT FOR HOLIDAYS AND EVENTS: Perfect for holidays, weddings, baby showers, birthdays and banquets.

VALUE PACK: Make sure to always have some mini envelopes on hand when you need them!

Mead A2 Invitation Envelopes measure 4 3/8" x 5 3/4" and are sized to fit an 8 1/2" x 11" sheet folded in quarters or a standard size invitation. Keep these versatile invitation envelopes on hand for use at home or the office. Features premium, 24 lb. , white wove stock. Executive style with a diagonal seam and V-flap construction. Quality envelopes form a strong seal when moistened to keep contents secure. 100 envelopes per box. Made in the USA.

4 3/8" x 5 3/4" envelopes are sized to fit an 8 1/2" x 11" sheet folded in quarters or a standard size invitation

Keep these versatile invitation envelopes on hand for use at home or the office

NO. 6 x 9 BOOKLET ENVELOPE PACK : 6” x 9” size business envelopes are perfect for mailing a variety of big documents including booklets, catalogs, forms, invoices & cards great envelopes for mailing tax returns ideal size for brochures, legal docs, wedding invitations & direct mailers offers maximum space within USPS 1-stamp dimension requirements; buy bulk & save big on both supplies & shipping.

DURABLE 24LB PAPER : These colored business envelopes are crafted from durable 24lb High quality Starburst paper. This makes them economical and durable.

BRIGHT COLOR : These brightly colored envelopes never fail to impress. Attractive and attention-grabbing, these multicolor envelopes are a popular choice for sending marketing mailers.

A6 Size Envelopes (4 3/4" x 6 1/2")

Made from Bright White 28lb bond / 70lb text (105 gsm) Paper Stock

Inkjet & Laser Printer Compatible

Quantity:140 Sets Colorful Mini Envelopes with blank bussiness cards(message cards/note cards).

Size:Each Mini Envelope measures 4.5" x 3"(LxH) with Gummed V-flap.Adhesive is moister activated.Each Message Card measures 4.3" X 2.8" (L X W).

14 Colors:White,Light Blue,Blue,Light Green,Green,Dark Green,Light Yellow,Bright Yellow,Yellow,Orange,Brown,Pink,Light Red,Red,Dark Red. Material:The Mini Envelope are made from paper.The notecards are made from blank white cardstock for your personal messages.

NO. 9 BUSINESS ENVELOPES : Our business envelopes # 9 3 7/8 x 8 7/8 are convenient for all-round use and perfectly fit standard 8.5’’ x 11’’ letters, documents, invoices, checks, fits great when inserted in the #10 Standard Envelopes return envelopes and more.

DURABLE 24LB PAPER : These colored business envelopes are crafted from durable 24lb High quality Starburst paper. This makes them economical and durable.

BRIGHT COLOR : These brightly colored envelopes never fail to impress. Attractive and attention-grabbing, these multicolor envelopes are a popular choice for sending marketing mailers.

100 Pack Gift Card Envelopes: These colorfully designed envelopes are the perfect size for gift cards, wedding placeholders, name cards, business cards, thank you notes, gift tags, and more

Gummed Seal: Our mini cash envelopes are made of high-quality 130 GSM paper; these miniature but thick and sturdy envelopes will provide solid protection for the small items inside

For Any Occasion: No matter the occasion – from weddings to baby showers, birthdays to banquets – these tiny envelopes include many colors in a perfect hue to match your theme

Florist Size Envelopes - Great for Gift Cards

Measures 2 3/8" x 3 5/8" - Fits card up to 2 1/4" x 3 1/2"

Made from a 24lb Bond (90 gsm) Paper Stock

THICK and DURABLE ENVELOPES - made from the most popular business letterhead or stationery weight of 24lb bond / 60lb text paper that greatly holds mailing documents; Gummed Booklet Style Square Flap that provides extra security for document's safe-keeping

STANDARD A2 SIZED ENVELOPES - 4 3/8” x 5 3/4” inches that fit any 4.25 x 5.5 letters, postcards, greeting cards, photos, announcements, social and invitation purposes and more; ideal large reply envelope size that fits inside A7, A8, A9 and A10 sizes envelopes

PERFECT FOR BUSINESS OR PERSONAL USE - great for enclosing your Save the Dates, DIY Invitations, Thank you cards, Graduation announcements, Do-It-Your-self Greeting Cards, and business correspondence; it can be hand addressed or professionally printed

Size: A6 (6.3 X 4.3 inches)

Quantity: 100 Black Envelopes per Pack

Features: Laser and Inkjet Compatible. Printable on off-set and digital printing presses and some home printers.

Color: White with Red Foil Lining | Foil gives envelope natural looking shine

Size: A8 (5.5 x 8.125 inches) | Great way to make your occasions even more special

Quantity: 25 per pack | Mail to impress

THICK and DURABLE ENVELOPES - made from the most popular business letterhead or stationery weight of 24lb bond / 60lb text paper that greatly holds mailing documents; Gummed Booklet Style Square Flap that provides extra security for document's safe-keeping

STANDARD A6 SIZED ENVELOPES - 4.75” x 6.5” inches that fit any 4x6 letters, postcards, greeting cards, photos, announcements, social and invitation purposes and more; ideal large reply envelope size that fits inside A7, A8, A9 and A10 sizes envelopes

PERFECT FOR BUSINESS OR PERSONAL USE - great for enclosing your Save the Dates, DIY Invitations, Thank you cards, Graduation announcements, Do-It-Your-self Greeting Cards, and business correspondence; it can be hand addressed or professionally printed

THICK and DURABLE ENVELOPES - made from the most popular business letterhead or stationery weight of 24lb bond / 60lb text paper that greatly holds mailing documents; Gummed Booklet Style Square Flap that provides extra security for document's safe-keeping

STANDARD A7 SIZED ENVELOPES - 7 1/4” x 5 1/4” inches that fit any 5 x 7 letters, postcards, greeting cards, photos, announcements, social and invitation purposes and more; ideal large reply envelope size that fits inside A8, A9 and A10 sizes envelopes

PERFECT FOR BUSINESS OR PERSONAL USE - great for enclosing your Save the Dates, DIY Invitations, Thank you cards, Graduation announcements, Do-It-Your-self Greeting Cards, and business correspondence; it can be hand addressed or professionally printed

THICK and DURABLE ENVELOPES - made from the most popular business letterhead or stationery weight of 24lb bond / 60lb text paper that greatly holds mailing documents; Gummed Booklet Style Square Flap that provides extra security for document's safe-keeping

STANDARD A7 SIZED ENVELOPES - 5.25” x 7.25” inches that fit any 5x7 letters, postcards, greeting cards, photos, announcements, social and invitation purposes and more; ideal large reply envelope size that fits inside A8, A9 and A10 sizes envelopes

PERFECT FOR BUSINESS OR PERSONAL USE - great for enclosing your Save the Dates, DIY Invitations, Thank you cards, Graduation announcements, Do-It-Your-self Greeting Cards, and business correspondence; it can be hand addressed or professionally printed

THICK and DURABLE ENVELOPES - made from the most popular business letterhead or stationery weight of 24lb bond / 60lb text paper that greatly holds mailing documents; Gummed Booklet Style Square Flap that provides extra security for document's safe-keeping

STANDARD A7 SIZED ENVELOPES - 7 1/4” x 5 1/4” inches that fit any 5 x 7 letters, postcards, greeting cards, photos, announcements, social and invitation purposes and more; ideal large reply envelope size that fits inside A8, A9 and A10 sizes envelopes

PERFECT FOR BUSINESS OR PERSONAL USE - great for enclosing your Save the Dates, DIY Invitations, Thank you cards, Graduation announcements, Do-It-Your-self Greeting Cards, and business correspondence; it can be hand addressed or professionally printed

Color: Lime Green

Size: #12 (4.75 x 11 inches)

Quantity: 50 per pack

SQUARE FLAP: Square Monarch flap gives these envelopes a beautiful modern style for all your stationary needs.

SIDE SEAMED GUMMED FLAP CONSTRUCTION: Quality Park's Invitation envelopes have a moisture activated GUMMED seal allowing you to send invitations, photos, announcements, RSVPs and greeting cards with confidence and professionalism.

PREMIUM 24LB STOCK: manufactured from premium 24 lb. white wove stock for a high quality feel. Perfect for adding a touch of elegance to social stationary.

✉ FINE and DURABLE ENVELOPES – Made from the most popular business letterhead or stationery weight of 24lb Bond / 60lb Text (90gsm) paper. It's thick and durable with a Gummed Booklet Style Square Flap that provides extra security.

✉ STANDARD A2 SIZED ENVELOPES – Measures 4 3/8 x 5 3/4 inches and fits any 4.25 x 5.5 letters, postcards, greeting cards, photos, invitations, announcements and more! Ideal large reply envelope size that fits inside A7, A8, A9 and A10 envelopes.

✉ PERFECT FOR BUSINESS OR PERSONAL USE – Great for enclosing personal cards like Save-the-Dates, Thank You Cards to Business Greeting Cards and Invitations. It can be hand addressed or professionally printed.

✉ FINE and DURABLE ENVELOPES - made from the most popular business letterhead or stationery weight of 24lb bond / 60lb text paper that greatly holds mailing documents; Gummed Booklet Style Square Flap that provides extra security for document's safe-keeping

✉ STANDARD A6 SIZED ENVELOPES - 4 3/4” x 6 1/2” inches that fit any 4 x 6 letters, postcards, greeting cards, photos, announcements, social and invitation purposes and more; ideal large reply envelope size that fits inside A7, A8, A9 and A10 sizes envelopes

✉ PERFECT FOR BUSINESS OR PERSONAL USE - great for enclosing your Save the Dates, DIY Invitations, Thank you cards, Graduation announcements, Do-It-Your-self Greeting Cards, and business correspondence; it can be hand addressed or professionally printed