A3 Envelopes
FailShoppers spend an estimated $36K a year here, so A3 Envelopes is a Fail.
- Flapen Score
- 36 / 100Ranks 689 of 740 Business, Industry & Science niches · −13 vs the category median of 4936
- Market size
- £36K/yr41K searches / yr
- 90-day growth
- -7.5%search demand this quarter
- Competition
- 69%top-5 click share · 7 brands · 24 sellers
Flapen Score
A3 Envelopes against its category
The dotted line is the Business, Industry & Science average. Past it, A3 Envelopes is stronger. Inside it, weaker.
Market
The A3 Envelopes market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for A3 Envelopes 41K times last year and spent an estimated £36K. The top 5 brands take 95% of clicks. Demand peaks in Nov–Dec. Flapen scores it 36 out of 100, a Fail.
01 · Demand
An estimated 9.2% of those searches ended in a purchase.
Shoppers searched for this 41K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 9.2% of those searches ended in a purchase. Searches in the last 90 days moved -7.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated £36K a year.
- Searches, last 12 months
- 41K
- Growth, 90 days vs prior 90
- -7.5%
- Conversion, latest week
- 9.2%
- Market size, estimated
- £36Ka year
- Peak month
- December1.7× the quietest month
- Top search term
- a3 envelopes21K searches a year
02 · Price
A sale here is worth £9.53.
Listings sell for £9.53 on average, from £3.39 to £19.71. Amazon reports units sold in ranges. This niche sold 4K to 5K a year. The average listing sells 100 to 250 of them. At £9.53 that is £953 to £2K a year per listing.
- Average price
- £9.53under the $15 to $100 sweet spot
- Price range
- £3.39–£19.71
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 4K–5K
- Units per listing a year
- 100–250
- Revenue per listing a year
- £953–£2K
- Returns
- 0.3%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is low.
85% of listings pay for placement with sponsored ads. 69% ship with Prime. On an average day, 1.3% of listings are out of stock. The average listing ranks #18 within Packaging & Shipping Supplies. It carries 1,500 reviews at 4.61 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 85%
- Prime listings
- 69%
- Out of stock, average day
- 1.3%
- Average rank
- #18in Packaging & Shipping Supplies
- Average rating
- 4.61 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 1,500per listing
- Listings tracked
- 13
04 · Newcomers
Brands here are settling in.
The brands on the shelf have sold for 50 months on average, so the names here are settling in.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 50 months
Products
Top A3 Envelopes products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 21, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Double Dragon 10-Pack A3 C3 Brown/Manilla Strong Hard Board Backed Self-Seal Envelopes - 457mm x 324mm - Printed Please Do Not Bend Envelope
- Price
- £5.77
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago

Blake Purely Everyday C4 324 x 229 mm 90 gsm Self Seal Pocket Envelopes (12891/50 PR) White - Pack of 50
- Price
- £4.93
- Rating
- 4.6/5
- Reviews
- 4,982
- Age
- 8y ago

Q-Connect C3 Envelope 457x324mm Pocket Self Seal 115gsm Manilla (Pack of 125)
- Price
- £19.71
- Rating
- 4.5/5
- Reviews
- 121
- Age
- 19y ago

Double Dragon 20-Pack A3 C3 Manilla Hard Board Backed Envelopes | 458mm x 324mm | Please Do Not Bend Printed | Padded & Tamper-Proof | Self-Seal Closure
- Price
- £8.31
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago

Triplast 50 x A3 C3 Manilla Hard Board Back Envelopes (457x324mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents
- Price
- £18.26
- Rating
- 4.6/5
- Reviews
- 955
- Age
- 10y ago
Trending
estimated 90-day click momentum
Double Dragon 50-Pack A3 C3 Manilla Hard Board Backed Envelopes | 458mm x 324mm | Please Do Not Bend Printed | Padded & Tamper-Proof | Self-Seal Closure
- Price
- £15.41
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago

Double Dragon 10-Pack A3 C3 Brown/Manilla Strong Hard Board Backed Self-Seal Envelopes - 457mm x 324mm - Printed Please Do Not Bend Envelope
- Price
- £5.77
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago

Triplast 50 x A3 C3 Manilla Hard Board Back Envelopes (457x324mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents
- Price
- £18.26
- Rating
- 4.6/5
- Reviews
- 955
- Age
- 10y ago

Q-Connect C3 Envelope 457x324mm Pocket Self Seal 115gsm Manilla (Pack of 125)
- Price
- £19.71
- Rating
- 4.5/5
- Reviews
- 121
- Age
- 19y ago

Blake Purely Everyday C4 324 x 229 mm 90 gsm Gummed Pocket Envelopes (13854/25 PR) Manilla - Pack of 25
- Price
- £3.67
- Rating
- 4.6/5
- Reviews
- 5,819
- Age
- 12y ago
Newest
by launch date
Double Dragon 10-Pack A3 C3 Brown/Manilla Strong Hard Board Backed Self-Seal Envelopes - 457mm x 324mm - Printed Please Do Not Bend Envelope
- Price
- £5.77
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago

Double Dragon 20-Pack A3 C3 Manilla Hard Board Backed Envelopes | 458mm x 324mm | Please Do Not Bend Printed | Padded & Tamper-Proof | Self-Seal Closure
- Price
- £8.31
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago

Double Dragon 50-Pack A3 C3 Manilla Hard Board Backed Envelopes | 458mm x 324mm | Please Do Not Bend Printed | Padded & Tamper-Proof | Self-Seal Closure
- Price
- £15.41
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago
![AKAR A3 C3 (45x32 cm - 457x324 mm) Printed Manilla Hard-Backed Envelope with Card [Pack of 5]](https://m.media-amazon.com/images/I/31HfWI+s9RL.jpg)
AKAR A3 C3 (45x32 cm - 457x324 mm) Printed Manilla Hard-Backed Envelope with Card [Pack of 5]
- Price
- £4.73
- Rating
- 4.5/5
- Reviews
- 38
- Age
- 2y ago

Evour A4/C4 Self Seal White Pocket Envelopes 229x324mm 100 GSM No Window for Home Office and Business Mailing Pack of 25
- Price
- £5.92
- Rating
- 4.6/5
- Reviews
- 1,608
- Age
- 5y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 69% of clicks. Leaders hold, but buyers still shop past them.
Brands
7 falling
Sellers
24
Est. top-5 brand share
95%
Top 20: 100%
Est. top-5 click share
69%
Top 20: 100%
Open market
2%
- Double Dragon45%
- Blake19%
- Triplast17%
- Q-Connect9%
- AKAR5%
- ARPAN3%
- Open — no brand owns it (1 brand, 2%)
Demand
A3 Envelopes search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Nov, Dec · busiest ÷ quietest = 1.7×
Search terms
Top A3 Envelopes search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- a3 envelopes21K/yr
- a3 envelopes hardback6K/yr
- c3 envelopes5K/yr
- a3 envelope3K/yr
- a3 do not bend envelopes3K/yr
- a3 hardback envelopes3K/yr
Reviews and returns
What reviews say buyers love and hate about A3 Envelopes
We read the reviews and the return reasons for every product selling here.
“Very poor quality”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
13 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common A3 Envelopes questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









