Best Envelopescom Mailing Envelopes in 2026

Daisy
Last Updated: Jul 17, 2026

At a Glance: Our Top Picks for Envelopescom Mailing Envelopes

Smead Poly Envelope, 1-1/4" Expansion, String-Tie Closure, Side Load, Letter Size, Red, 5 per Pack (89527)
#TOP1
Smead Poly Envelope, 1-1/4" Expansion, String-Tie Closure, Side
9.8
PM SCORE
Smead Poly Project Envelope, 1-1/4" Expansion, String-Tie Closure, Side Load, Letter Size, 5 per Pack (89519)
#TOP2
Smead Poly Project Envelope, 1-1/4" Expansion, String-Tie Closure,
9.8
PM SCORE
Smead Poly Envelope, 1-1/4" Expansion, String-Tie Closure, Side Load, Letter Size, Blue, 5 per Pack (89522)
#TOP3
Smead Poly Envelope, 1-1/4" Expansion, String-Tie Closure, Side
9.8
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Envelopescom Mailing Envelopes of 2026

#TOP1

Smead Poly Envelope, 1-1/4" Expansion, String-Tie Closure, Side Load, Letter Size, Red, 5 Per Pack (89527)

SMEAD
89527
11.63 X 9.75 X 0.56 Inches
0.38 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Tough and acid free, these brightly colored envelopes are ideal for the home, office or classroom

Closed on three sides for security and portability

Expands to 1-1/4" to hold up to 200 sheets; String-tie closure to secure contents

Durable poly material is tear and water resistant and easy to clean; Acid free and PVC free

Includes 5 side load letter size (9-3/4" W x 11-5/8" H) poly envelopes with protective flap and string tie closure

#TOP2

Smead Poly Project Envelope, 1-1/4" Expansion, String-Tie Closure, Side Load, Letter Size, 5 Per Pack (89519)

SMEAD
89519
11.63 X 9.75 X 0.56 Inches
0.20 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Tough and acid free, these brightly colored envelopes are ideal for the home, office or classroom

Closed on three sides for security and portability

Expands to 1-1/4" to hold up to 200 sheets; String-tie closure to secure contents

Durable poly material is tear and water resistant and easy to clean; Acid free and PVC free

Includes 5 side load letter size (9-3/4" W x 11-5/8" H) poly envelopes with protective flap and string tie closure

#TOP3

Smead Poly Envelope, 1-1/4" Expansion, String-Tie Closure, Side Load, Letter Size, Blue, 5 Per Pack (89522)

SMEAD
89522
11.63 X 9.75 X 0.56 Inches
0.35 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Tough and acid free, these brightly colored envelopes are ideal for the home, office or classroom

Closed on three sides for security and portability

Expands to 1-1/4" to hold up to 200 sheets; String-tie closure to secure contents

Durable poly material is tear and water resistant and easy to clean; Acid free and PVC free

Includes 5 side load letter size (9-3/4" W x 11-5/8" H) poly envelopes with protective flap and string tie closure

Smead Poly Envelope, 1-1/4" Expansion, String-Tie Closure, Top Load, Letter Size, Red, 5 Per Pack (89547)

SMEAD
89547
11.63 X 9.75 X 0.56 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Junipers' 9.87

Features

Tough and acid free, these brightly colored envelopes are ideal for the home, office or classroom

Closed on three sides for security and portability

Expands to 1-1/4" to hold up to 200 sheets; String-tie closure to secure contents

Durable poly material is tear and water resistant and easy to clean; Acid free and PVC free

Includes 5 top load letter size (9-3/4" W x 11-5/8" H) poly envelopes with protective flap and string tie closure

#TOP5

Smead Poly Envelope, 1-1/4" Expansion, String-Tie Closure, Top Load, Letter Size, Assorted Colors, 5 Per Pack (89501)

SMEAD
89501
11.63 X 9.88 X 0.56 Inches
0.20 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Tough and acid free, these brightly colored envelopes are ideal for the home, office or classroom

Closed on three sides for security and portability

Expands to 1-1/4" to hold up to 200 sheets; String-tie closure to secure contents

Durable poly material is tear and water resistant and easy to clean; Acid free and PVC free

Includes 5 top load letter size (9-3/4" W x 11-5/8" H) poly envelopes with protective flap and string tie closure

#TOP6

Smead Poly Envelope, 1-1/4" Expansion, String-Tie Closure, Top Load, Letter Size, Green, 5 Per Pack (89543)

SMEAD
89543
11.63 X 9.75 X 0.56 Inches
0.43 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Tough and acid free, these brightly colored envelopes are ideal for the home, office or classroom

Closed on three sides for security and portability

Expands to 1-1/4" to hold up to 200 sheets; String-tie closure to secure contents

Durable poly material is tear and water resistant and easy to clean; Acid free and PVC free

Includes 5 top load letter size (9-3/4" W x 11-5/8" H) poly envelopes with protective flap and string tie closure

Top 10 mailing envelopes Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Smead 6

Top 10 mailing envelopes Brands Pie Chart


We've carried out a comprehensive analysis of 4,541 reviews on mailing envelopes, using our selection criteria to identify the best options in the office & school supplies. Our findings reveal that most customers typically select mailing envelopes priced around $8.45, with top brands including aimoh, yens, funglam, mflabel, mead, ecoswift, scotch, gssusa and amazon basics and offitecture

Our team of expert editors reviewed these high-quality items and handpicked the top 6 mailing envelopes for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the office & school supplies category. These include quality business products, fantasybuy, funglam supply, onelink mall, amazon.com, ecoswift, halulu, offitecture and business envelopes and commercialproducts .

We are dedicated to assisting our users in finding the right envelopes Products based on their needs, saving them considerable time when choosing which mailing envelopes to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.