SellSync SellByProxy
SellByProxy

List once. Sell everywhere.

Create a single master listing in SellSync — we normalize fields, map categories, and push live listings to Amazon, Shopify, Etsy, and Depop. Channel-specific titles, bullets, and compliance copy are generated from one source of truth (mock below).

  • Policy checks — restricted terms, hazmat, and category gates per channel.
  • Fee-aware pricing — reference fees shown before you publish (estimates).

How it works

  1. 1. Draft your product in SellSync (master SKU).
  2. 2. Toggle channels — mapping rules fill titles, tags, and shipping profiles.
  3. 3. Preview shopper cards, then publish — webhooks keep inventory in sync.

4

Channels on

~$18

Est. fees / sale

2.1M

Reach (mock)

OK

Sync health

New listing

Master catalog fields (mock — not saved).

Propagate to

Third-party channels receive a mapped listing payload.

  • Shopify On
  • Amazon On
  • Etsy On
  • Depop On

Mock only — simulates staggered API success.

Field mapping

Amazon: uses FBA-ready title (80 char cap). Etsy: tags auto-derived from material + color. Depop: style keywords + ship-from set to your default.

Inventory buffer

SellSync can hold back units per channel so you never oversell during sync lag (mock values).

Amazon FBA
−2 units
Shopify
−0
Etsy
−1 unit
Depop
−1 unit

How the product card looks on each site

Mock shopper views — each frame imitates that marketplace listing layout. Your SellSync title is shortened or enriched per channel rules (e.g. Amazon search keywords, Etsy materials line, Depop vibe tags).

Non-interactive mockups
amazon Prime

Recycled Cashmere Scarf Women Winter Fog Gray Lightweight Soft 180cm

4.2 (mock)

$78.00

FREE delivery Thu, Apr 17

Vivian Studio

Demo storefront theme

Recycled cashmere scarf — fog gray

Accessories · Scarves

$78.00 USD
etsy

Fog Gray Recycled Cashmere Scarf | Eco Gift | Soft Winter

$78.00

Free shipping (mock) · 5–7 days

Tags: cashmere · recycled · scarf · gray

@vivianstudio

Active now

fog gray recycled cashmere scarf

$78

Ships worldwide · tracked

#sustainable #cashmere

What SellSync changed per channel (mock)

  • Amazon — search-heavy title; stripped emojis; added size dimensions in keywords.
  • Shopify — kept brand voice; assigned collection “Accessories”.
  • Etsy — materials first sentence; 13 tags from fiber + color + occasion.
  • Depop — lowercase title, hashtag line, ship profile from your Depop defaults.