A4 Brown Envelopes
Skip itA small market ($31K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.2%return rate — above 5% kills the launch gate
Conversion
Incredible14.2%search→purchase rate — share of searches ending in a sale
Review moat
Good879.2avg incumbent reviews — the moat a new listing must climb
Competition
Okay59%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Growth
Bad-5.3%90-day search growth — must beat 0% to launch
Avg price
Bad£7.71avg listing price — sweet spot $15–$100
Price range
Bad£2.44–£18.38cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Bad£31K£31K/yr · 29K searches
Is a4 brown envelopes profitable on Amazon?
According to Flapen's Amazon United Kingdom niche tracking, a4 brown envelopes is a £31K/yr Amazon United Kingdom market (29K searches/yr). The top 5 brands hold 82% of demand. Verdict: Skip it — 44/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
a4 brown envelopes market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 5K–6K
- avg 250–500/product
- Revenue / yr
- £39K–£46K
- units × avg price
- Conversion rate
- 14.2%
- Avg BSR
- #39
- Page quality
- 0%
- Prime
- 85%
- Sponsored
- 95%
- Out of stock
- 2.9%
- Avg brand age
- 48 months
- Avg seller age
- 188 days
Competition: brands, sellers & click share
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.Brands
12 rising
Sellers
34
Top-5 brand share
82%
Top 20: 100%
Top-5 click share
59%
Top 20: 100%
Open market
14%
- Blake26%
- Thymera26%
- SuperGift.com22%
- MA NASIR5%
- Q-Connect4%
- Triplast4%
- Open — no brand owns it (6 brands, 14%)
a4 brown envelopes demand & seasonality
Weekly Amazon search volume, last 39 weeks — -5.3% search growth over the last 90 days.Top a4 brown envelopes search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- a4 brown envelopes11K/yr
- brown envelopes a46K/yr
- a4 envelopes brown6K/yr
- large brown envelopes4K/yr
- brown a4 envelopes3K/yr
Top a4 brown envelopes products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 20 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
50 x Brown Mailing Envelopes Self Seal for Posting mailing Home Office and Ecommerce A4 A5 DL (A4)
SuperGift.com£6.734.5★317 rev
C4 Manilla Pocket Peel & Seal Envelopes A4 Brown Mailing Envelopes for Documents Letters & Office Post Strong Self Seal Kraft Postal Wallets (10)
Thymera£5.914.6★11 rev
Blake Purely Packaging C4 324 x 229 x 25 mm 130 gsm Gusset Pocket Peel and Seal Envelopes (1991/10 PR) Manilla - Pack of 10
Blake£2.974.6★923 rev
Gusset Envelopes A4 - Large Expandable Brown Document Envelope - 229 x 334mm Paper Mailing Bags (5)
Thymera£8.374.7★15 rev
Blake Purely Everyday - Manilla Envelopes C4 (324 x 229 mm) - Pack of 50 - Self Seal Mailer - Paper 90 GSM - Large Envelopes for A4 Documents - Business/Office Supplies (13878/50 PR)
Blake£4.974.5★5 rev
Newest
by launch dateC4 Manilla Pocket Peel & Seal Envelopes A4 Brown Mailing Envelopes for Documents Letters & Office Post Strong Self Seal Kraft Postal Wallets (10)
Thymera£5.9111 rev
C4 Manilla Pocket Peel & Seal Envelopes A4 Brown Mailing Envelopes for Documents Letters & Office Post Strong Self Seal Kraft Postal Wallets (25)
Thymera£7.6611 rev
Gusset Envelopes A4 - Large Expandable Brown Document Envelope - 229 x 334mm Paper Mailing Bags (5)
Thymera£8.3715 rev
C4 Manila Envelopes 12 Pack Brown A4 Self Seal 80 GSM Peel and Seal Large Letter Envelopes for Documents Photos Office and Home Mailing
MA NASIR£3.7112 rev
Blake Purely Everyday - Manilla Envelopes C4 (324 x 229 mm) - Pack of 50 - Self Seal Mailer - Paper 90 GSM - Large Envelopes for A4 Documents - Business/Office Supplies (13878/50 PR)
Blake£4.975 rev
Trending
90-day click momentumC4 Manilla Pocket Peel & Seal Envelopes A4 Brown Mailing Envelopes for Documents Letters & Office Post Strong Self Seal Kraft Postal Wallets (10)
Thymera£5.914.6★
C4 Manilla Pocket Peel & Seal Envelopes A4 Brown Mailing Envelopes for Documents Letters & Office Post Strong Self Seal Kraft Postal Wallets (25)
Thymera£7.664.6★
Gusset Envelopes A4 - Large Expandable Brown Document Envelope - 229 x 334mm Paper Mailing Bags (5)
Thymera£8.374.7★
Blake Purely Everyday C5 229 x 162 mm 80 gsm Gummed Pocket Envelopes (13848/50 PR) Manilla - Pack of 50
Blake£2.444.6★
Blake Purely Everyday C4 324 x 229 mm 90 gsm Pocket Self Seal Plain Envelopes (13878) Manilla - Pack of 250
Blake£13.864.6★
What reviews say buyers love and hate about a4 brown envelopes
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality envelopes”
“Good price”
“Did the job”
“Convenient size for many purposes”
“Sturdy and do their job”
“Good thickness capacity”
“Paper quality is good”
“Easy for me than shop”
“Keeps contents protected”
“so cannot comment on the adhesion”
What buyers complain about
“Much too thin”
“Very poor quality”
“Thin”
“Do not bend”
“Only provided 19 instead of the 20 advertised”
“difficult to get papers inside”
“in storage these self-seals tend to dry out”
“Adhesion is doubtful”
Top return reasons
Common a4 brown envelopes questions
- Is a4 brown envelopes profitable to sell on Amazon United Kingdom?
- The niche generates £31K/yr across 20 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is -5.3%. Flapen's verdict: Skip it (44/100).
- How competitive is the a4 brown envelopes niche?
- 12 brands and 34 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 82% of demand.
- What do buyers complain about in a4 brown envelopes?
- Top complaints mined from reviews: Thickness, Quality-Overall, Thin. The return rate is 0.2%.
- What does it cost to enter the a4 brown envelopes niche?
- Listings span £2.44–£18.38; the average listing price is £7.71 (sweet spot $15–$100). The average incumbent carries 879 reviews — the moat a new listing must climb.
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