A5 Envelopes
FailThe top 5 products take 81% of clicks, so A5 Envelopes is a Fail.
- Flapen Score
- 44 / 100Ranks 489 of 835 Stationery & Office Supplies niches · −3 vs the category median of 4744
- Market size
- £538K/yr396K searches / yr
- 90-day growth
- -11.4%search demand this quarter
- Competition
- 81%top-5 click share · 8 brands · 50 sellers
Flapen Score
A5 Envelopes against its category
The dotted line is the Stationery & Office Supplies average. Past it, A5 Envelopes is stronger. Inside it, weaker.
Market
The A5 Envelopes market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for A5 Envelopes 396K times last year and spent an estimated £538K. The top 5 brands take 93% of clicks. Demand peaks in Dec. Flapen scores it 44 out of 100, a Fail.
01 · Demand
An estimated 17.4% of those searches ended in a purchase.
Shoppers searched for this 396K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 17.4% of those searches ended in a purchase. Searches in the last 90 days moved -11.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated £538K a year.
- Searches, last 12 months
- 396K
- Growth, 90 days vs prior 90
- -11.4%
- Conversion, latest week
- 17.4%
- Market size, estimated
- £538Ka year
- Peak month
- December1.8× the quietest month
- Top search term
- a5 envelopes160K searches a year
02 · Price
A sale here is worth £7.81.
Listings sell for £7.81 on average, from £3.23 to £19.10. Amazon reports units sold in ranges. This niche sold 60K to 80K a year. The average listing sells 5,000 to 6,000 of them. At £7.81 that is £39K to £47K a year per listing.
- Average price
- £7.81under the $15 to $100 sweet spot
- Price range
- £3.23–£19.10
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 60K–80K
- Units per listing a year
- 5,000–6,000
- Revenue per listing a year
- £39K–£47K
- Returns
- 0.2%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is ads and reviews.
92% of listings pay for placement with sponsored ads. 83% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #91 within Envelopes & Mailing Supplies. It carries 2,026 reviews at 4.56 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 92%
- Prime listings
- 83%
- Out of stock, average day
- 0.0%
- Average rank
- #91in Envelopes & Mailing Supplies
- Average rating
- 4.56 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 2,026per listing
- Listings tracked
- 12
04 · Newcomers
Brands here are settling in.
The brands on the shelf have sold for 46 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
- 46 months
Products
Top A5 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 29, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
C5 / A5 White Peel & Seal Envelopes Pack of 30
- Price
- £3.29
- Rating
- 4.5/5
- Reviews
- 3,144
- Age
- 10y ago

Triplast 50 x C5 White Self Seal Security Envelopes (Size: 229x164mm) | Fully Opaque Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home Office & Commercial Use
- Price
- £4.36
- Rating
- 4.5/5
- Reviews
- 1,900
- Age
- 4y ago

Triplast 20 x C5 White Self Seal Security Envelopes (Size: 229x164mm) | Fully Opaque Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home Office & Commercial Use
- Price
- £3.23
- Rating
- 4.5/5
- Reviews
- 1,900
- Age
- 4y ago

Blake Purely Everyday C5 229 x 162 mm 90 gsm Pocket Self Seal Envelopes (13893/50 PR) White - Pack of 50
- Price
- £3.35
- Rating
- 4.7/5
- Reviews
- 4,847
- Age
- 11y ago

Triplast 100 x C5 White Self Seal Security Envelopes (Size: 229x164mm) | Fully Opaque Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home Office & Commercial Use
- Price
- £6.65
- Rating
- 4.5/5
- Reviews
- 1,900
- Age
- 4y ago
Trending
estimated 90-day click momentum
Triplast 100 x C5 White Self Seal Security Envelopes (Size: 229x164mm) | Fully Opaque Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home Office & Commercial Use
- Price
- £6.65
- Rating
- 4.5/5
- Reviews
- 1,900
- Age
- 4y ago

Karma Krafts C5 Ivory Cream Envelopes 162 x 229mm 100gsm Gummed Diamond Flap Fits A5 Cards Wedding & Invitation Envelopes Pack of 25
- Price
- £6.45
- Rating
- 4.3/5
- Reviews
- 44
- Age
- 3y ago

RFE Pack of 100 - C5 / A5 White Mailing Envelopes Self Seal for Posting mailing Home Office Ecommerce and Business 90gsm 229 x 162mm
- Price
- £9.94
- Rating
- 4.8/5
- Reviews
- 6
- Age
- 1y ago

Postmaster A5 Envelopes 229 x 162 mm C5 90 GSM Self Seal White 500 Pack
- Price
- £16.52
- Rating
- 4.6/5
- Reviews
- 1,365
- Age
- 3y ago

FIRST CHOICE KAYA 25 50 100 DL White Mailing Envelopes Self Seal for Posting mailing Home Office and Ecommerce Peel and Seal (100)
- Price
- £5.70
- Rating
- 4.5/5
- Reviews
- 1,302
- Age
- 4y ago
Newest
by launch date
RFE Pack of 100 - C5 / A5 White Mailing Envelopes Self Seal for Posting mailing Home Office Ecommerce and Business 90gsm 229 x 162mm
- Price
- £9.94
- Rating
- 4.8/5
- Reviews
- 6
- Age
- 1y ago

Karma Krafts C5 Ivory Cream Envelopes 162 x 229mm 100gsm Gummed Diamond Flap Fits A5 Cards Wedding & Invitation Envelopes Pack of 25
- Price
- £6.45
- Rating
- 4.3/5
- Reviews
- 44
- Age
- 3y ago

Postmaster A5 Envelopes 229 x 162 mm C5 90 GSM Self Seal White 500 Pack
- Price
- £16.52
- Rating
- 4.6/5
- Reviews
- 1,365
- Age
- 3y ago

Triplast 20 x C5 White Self Seal Security Envelopes (Size: 229x164mm) | Fully Opaque Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home Office & Commercial Use
- Price
- £3.23
- Rating
- 4.5/5
- Reviews
- 1,900
- Age
- 4y ago

Triplast 50 x C5 White Self Seal Security Envelopes (Size: 229x164mm) | Fully Opaque Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home Office & Commercial Use
- Price
- £4.36
- Rating
- 4.5/5
- Reviews
- 1,900
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 81% of clicks. A locked shelf that new listings rarely crack.
Brands
8 falling
Sellers
50
Est. top-5 brand share
93%
Top 20: 100%
Est. top-5 click share
81%
Top 20: 100%
Open market
4%
- Triplast35%
- Tallon34%
- Blake17%
- Postmaster4%
- FIRST CHOICE KAYA3%
- evour3%
- Open — no brand owns it (2 brands, 4%)
Demand
A5 Envelopes search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Dec · busiest ÷ quietest = 1.8×
Search terms
Top A5 Envelopes search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- a5 envelopes160K/yr
- envelopes a561K/yr
- c5 envelopes69K/yr
- a5 envelopes peel and seal17K/yr
- c5 envelopes peel and seal17K/yr
- a5 envelope10K/yr
- envelopes c513K/yr
- a5 size envelopes7K/yr
- a5 white envelopes7K/yr
- c5 envelope5K/yr
Reviews and returns
What reviews say buyers love and hate about A5 Envelopes
We read the reviews and the return reasons for every product selling here.
“Average 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.
15 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 A5 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









