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A1 Envelopes

 

A1 envelopes measure 3 5/8 x 5 1/8 and are commonly used to mail RSVP cards for weddings and invitations. A1 envelopes are offered in a rainbow of colors, in fact close to 100 colors to choose from. You can order A1 envelopes printed by LCI Paper or blank to print yourself (free A1 envelope templates available). Mix and match with 3 1/2 x 4 7/8 A1 blank cards for the perfect note or RSVP card and envelope set.

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A1 LCI Felt Warm Cream Envelopes - Straight Flap, 70T
 
Warm Cream LCI Felt Envelopes 3 5/8 x 5 1/8 - Straight Flap - Felt
$9.69per 25 Pack
A1 Curious Metallics Botanic Envelopes - Straight Flap, 80T
5 More Colors >
 
Botanic Curious Metallics Envelopes 3 5/8 x 5 1/8 - Straight Flap - Metallic
$6.32per 25 Pack
A1 LCI Linen Ultimate White Envelopes - Straight Flap, 70T
 
Ultimate White LCI Linen Envelopes 3 5/8 x 5 1/8 - Straight Flap - Linen
$7.75per 25 Pack
A1 LCI Smooth Radiant White Envelopes - Pointed Flap, 70T
 
Radiant White LCI Smooth Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Smooth
$6.11per 25 Pack
A1 Gmund Wood Bubinga Envelopes - Straight Flap, 68T
 
Bubinga Wood Grain Envelopes 3 5/8 x 5 1/8 - Straight Flap - Wood Grain
$10.27per 25 Pack
A1 Stardream Rose Quartz Envelopes - Straight Flap, 81T
11 More Colors >
 
Rose Quartz Stardream Envelopes 3 5/8 x 5 1/8 - Straight Flap - Metallic
$5.47per 25 Pack
A1 LCI Smooth Ecru Envelopes - Straight Flap, 70T
 
Ecru LCI Smooth Envelopes 3 5/8 x 5 1/8 - Straight Flap - Smooth
$6.11per 25 Pack
A1 LCI Smooth Ecru Envelopes - Straight Flap, 70T
 
A1 LCI Smooth Ecru Envelopes - Straight Flap, 70T
$94.38per 1000 Pack
A1 Dur-O-Tone Newsprint Aged Envelopes - Straight Flap, 70T
 
Newsprint Aged Dur-O-Tone Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$27.52per 250 Pack
A1 Glo-Tone Blue Light Envelopes - Straight Flap, 60T
2 More Colors >
 
Blue Light Glo-Tone Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$18.48per 250 Pack
A1 Kraft-Tone Standard White Kraft Envelopes - Straight Flap, 70T
5 More Colors >
 
Standard White Kraft Kraft-Tone Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$33.60per 250 Pack
A1 Parchtone Natural Envelopes - Straight Flap, 60T
 
Natural Parchtone-Envelopes 3 5/8 x 5 1/8 - Straight Flap - Parchment
$27.63per 250 Pack
A1 Plike White Envelopes - Straight Flap, 95T
 
White Plike Envelopes 3 5/8 x 5 1/8 - Straight Flap - Smooth Tactile
$353.37per 2000 Pack
A1 Plike Black Envelopes - Pointed Flap, 95T
 
Black Plike Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Smooth Tactile
$409.11per 2000 Pack
A1 Poptone Limeade Envelopes - Euro Flap, 70T
17 More Colors >
 
Limeade Poptone Envelopes 3 5/8 x 5 1/8 - Euro Flap - Matte
$56.60per 250 Pack
A1 Poptone Whip Cream Envelopes - Straight Flap, 70T
17 More Colors >
 
Whip Cream Poptone Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$50.94per 250 Pack
A1 Royal Sundance 100 PC White Envelopes - Pointed Flap, 70T
 
100 PC White Royal Sundance Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Felt
$292.05per 2500 Pack
A1 Royal Sundance 100 PC White Envelopes - Pointed Flap, 80T
 
100 PC White Royal Sundance Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Felt
$317.76per 2500 Pack
A1 Royal Sundance 100 PC White Envelopes - Straight Flap, 70T
 
100 PC White Royal Sundance Envelopes 3 5/8 x 5 1/8 - Straight Flap - Felt
$196.19per 2500 Pack
A1 Royal Sundance 100 PC White Envelopes - Straight Flap, 80T
 
100 PC White Royal Sundance Envelopes 3 5/8 x 5 1/8 - Straight Flap - Felt
$215.54per 2500 Pack
A1 Astrobright Galaxy Gold Envelopes - Pointed Flap, 60T
18 More Colors >
 
Galaxy Gold Astrobright Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Matte
$287.00per 2500 Pack
A1 Classic Linen Natural White Envelopes - Straight Flap, 80T
 
Natural White Classic Linen Envelopes 3 5/8 x 5 1/8 - Straight Flap - Linen
$283.70per 2500 Pack
A1 LCI Smooth Radiant White Envelopes - Euro Flap, 80T
 
Radiant White LCI Smooth Envelopes 3 5/8 x 5 1/8 - Euro Flap - Smooth
$7.38per 25 Pack
SALE
23% OFF
A1 Gmund No Color Envelopes - Euro Flap, 81lb
 
No Color No Color No Bleach Envelopes 3 5/8 x 5 1/8 - Euro Flap - Organic
$5.63per 25 Pack
A1 Dur-O-Tone Butcher Orange Envelopes - Straight Flap, 60T
 
Butcher Orange Dur-O-Tone Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$34.95per 250 Pack
A1 Astroparche Shell Envelopes - Straight Flap, 60T
2 More Colors >
 
Shell Astroparche Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$203.42per 2500 Pack
A1 Astroparche White Envelopes - Pointed Flap, 60T
2 More Colors >
 
White Astroparche Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Matte
$306.82per 2500 Pack
A1 Gmund Colors Matt Black Forest Envelopes - Euro Flap, 68T
23 More Colors >
 
Black Forest Gmund Colors MATT Envelopes 3 5/8 x 5 1/8 - Euro Flap - Matte
$7.45per 25 Pack
A1 Gmund Colors Matt Timberwolf Gray Envelopes - Euro Flap, 81T
8 More Colors >
 
Timberwolf Gray Gmund Colors MATT Envelopes 3 5/8 x 5 1/8 - Euro Flap - Matte
$7.45per 25 Pack
A1 Astrobright Vulcan Green Envelopes - Straight Flap, 60T
18 More Colors >
 
Vulcan Green Astrobright Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$182.36per 2500 Pack
A1 Astrobright Re-Entry Red Envelopes - Straight Flap, 70T
 
Re-Entry Red Astrobright Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$203.19per 2500 Pack
A1 Astrobright Cosmic Orange Envelopes - Pointed Flap, 70T
 
Cosmic Orange Astrobright Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Matte
$299.11per 2500 Pack
A1 Gmund Cotton Wedding White Envelopes - Euro Flap, 74T
 
Wedding White 100% Cotton Envelopes 3 5/8 x 5 1/8 - Euro Flap - Cotton
$9.00per 25 Pack
A1 Stardream Onyx Envelopes - Euro Flap, 81T
 
Onyx Stardream Envelopes 3 5/8 x 5 1/8 - Euro Flap - Metallic
$5.47per 25 Pack
A1 Gmund Colors Matt Limba Envelopes - Euro Flap, 91T
 
Limba Gmund Colors MATT Envelopes 3 5/8 x 5 1/8 - Euro Flap - Matte
$7.45per 25 Pack
SALE
34% OFF
A1 Gmund Cotton Max White Envelopes - Old World Flap, 74T
 
A1 Gmund Cotton Max White Envelopes - Old World Flap, 74T
$5.39per 25 Pack
 

A1 Envelopes (FAQs)

Is this envelope suitable for use as a wedding RSVP envelope?

Yes, A1 3 5/8 x 5 1/8 envelope size is a common, standard RSVP envelope size. To match your custom invites, we offer hundreds of A1 response envelopes in colors, finishes, and textures galore, all blank or printed with your return address.

Learn more about LCI Paper's envelope printing service.

A1 envelopes a bit too small for your taste? A2 envelopes are the second most popular response envelope size.

Can little A1 envelopes be mailed in the United States?

Yes, though they are small, A1 envelopes can be mailed through the United States Postal Service.

Do A1 3 5/8 x 5 1/8 envelopes require normal postage?

A1 envelopes require standard postage so long as they weigh 1 ounce or under.

What is the difference between 4-bar and A1 envelopes?

Pertaining to size, nothing! The terms 4-bar and A1 envelopes both refer to envelopes measuring 3 5/8 x 5 1/8 inches - the standard, popular R.S.V.P. envelope size. In technical paper jargon terms, bar comes from baronial - a style of announcement envelope with a traditional pointed flap - but in average joe, envelope size terms, A1 and 4-bar are synonymous.

These envelopes are also commonly referred to as A-1 envelopes, and 3x5 envelopes.

I need wedding reply envelope etiquette help! How do I properly address my envelopes to include both my fiance and myself?

First and foremost, the actual mailing address is the most important piece of a RSVP return address, so be sure that the address is correct and recognizable to your local post office.

Regarding the names, there are many common ways of doing this - take your pick!

  • Jane Doe and John Smith
  • J. Doe & J. Smith
  • The Future Mr. and Mrs. Smith
  • The Future Mr. and Mrs.
  • J & J (in a decorative monogram)
  • ...and with your creativity, the list goes on