A5 Envelopes
a concentrated shelf (top 5 take 81% of clicks) — A5 Envelopes doesn't clear our bar today.
Flapen Score
Is A5 Envelopes profitable on Amazon?
According to Flapen's Amazon United Kingdom niche tracking, A5 Envelopes is a £538K/yr Amazon United Kingdom market (396K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Dec. Verdict: Skip it — 44/100.
A5 Envelopes: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Not really. Search demand moved -11.4% over the last 90 days and 17.4% of searches end in a purchase.
£538K
revenue / yr
Who owns the niche?
The top 5 brands hold 93% of demand, so 7% of the market is open.
7%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.6★ — the gap to enter on.
0/100
page quality · 12 products
Top A5 Envelopes products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 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
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: brands, sellers & click share
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.
Brands
8 falling
Sellers
50
Top-5 brand share
93%
Top 20: 100%
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%)
A5 Envelopes demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: Dec · busiest ÷ quietest = 1.8×
Top A5 Envelopes search terms shoppers use
The exact queries shoppers type, with 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
What reviews say buyers love and hate about A5 Envelopes
What buyers mention most, as a share of all reviews.
What buyers love
92% of reviews“Great quality, arrived quickly”
“Fair price”
“Do exactly as expected”
“The size is great”
“Always good quality stick fine”
What buyers complain about
90% of reviews“Average quality”
“that shows in the thickness of the paper so are a lower quality”
“Stickiness was non existent”
“that shows in the thickness of the paper so are a lower quality”
“Large”
A5 Envelopes return rate & reasons
Why buyers send it back, as a share of all return requests.
0.2%
Return rate
75%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common A5 Envelopes questions
The questions sellers ask about this niche, answered from the tracked metrics.
Best Flapen score
The highest-scoring niches we track right now, across every category.









