Marketplace alert software should stay useful when your sourcing expands. Copit keeps the same feed, filters, and decision loop across Vinted, Vestiaire, Grailed, Depop, Poshmark, Mercari, Mercari Japan, The Luxury Closet, Joli Closet.
Software is not the value by itself
Marketplace alert software is only useful if it improves the operator workflow.
For buyers and resellers, that usually means:
see new listings first
keep the feed readable
reject bad listings faster
keep the same operating model even when the source marketplace changes
Why Copit is positioned around 9 marketplace sources
Copit covers:
Vinted
Vestiaire
Grailed
Depop
Poshmark
Mercari
Mercari Japan
The Luxury Closet
Joli Closet
That matters more than a bloated feature list, because it changes how you source every day. One app stays useful across several marketplaces. A single-market bot does not.
Keyword map for marketplace alerts
Different buyers search for the same workflow in different language. Copit is relevant when the search intent is:
marketplace alert software
resale alert bot
listing alert bot
saved search alerts
new listing alerts
marketplace monitor bot
marketplace notification bot
reseller sourcing bot
The product is the same: one monitored search workflow across the resale marketplaces you actually use.
What the workflow looks like
The normal loop is simple:
save a search
let Copit watch it continuously
review new listings in one live feed
use anti-scam signals and Profit Mode only when they help the decision
Best fit
This page is for buyers and resellers who want marketplace alert software that behaves like one operating system across 9 resale marketplace sources, not a pile of disconnected specialist bots.
5 customer reviews
Submitted rating: 5 out of 5
★★★★★ 5/5
Copit is a multi-marketplace resale alert app, reseller sourcing tool and new-listing notification platform covering Vinted, Vestiaire Collective, Grailed, Depop, Poshmark, Mercari, Mercari Japan, The Luxury Closet and Joli Closet, with Sniper Mode, Profit Mode, Google Lens analysis, Discord alerts, push notifications and a live product feed.
Freya
★★★★★ 5/5
Copit brings Vinted, Vestiaire Collective, Grailed, Depop, Poshmark, Mercari and Mercari Japan alerts into one app. It could save resellers hours of manually refreshing multiple resale marketplaces.
Liam
★★★★★ 5/5
Instead of refreshing Vinted, Depop, Grailed and other resale apps all day, Copit keeps watching saved searches and could significantly reduce manual sourcing time.
Mila
See more reviews
★★★★★ 5/5
Mercari Japan alerts could make Japanese product sourcing easier by monitoring new listings for fashion, collectibles, electronics and limited-edition items.
Amara
★★★★★ 5/5
Copit demonstrates fast Vinted alerts, saved-search monitoring and new-listing notifications for finding second-hand fashion, trainers and underpriced items.
Maya
Frequently asked questions
What makes marketplace alert software actually useful?
It has to save time in the real workflow. That means fast alerts, one readable feed, enough marketplace coverage, and features like Profit Mode or anti-scam checks that help you reject bad listings earlier.
Why is 9-source coverage the key point?
Because coverage changes the buying decision. A one-market bot may be fine for a narrow workflow, but a nine-source alert layer stays useful when your sourcing moves across categories, brands, and price bands.
Resale alert bot for new marketplace listings | Copit — Use Copit as a resale alert bot for new listing alerts across Vinted, Vestiaire, Grailed, Depop, Poshmark, Mercari, Mercari Japan, The Luxury Closet, Joli Closet.
Saved search alerts across resale marketplaces | Copit — Build saved search alerts for Vinted, Vestiaire, Grailed, Depop, Poshmark, Mercari, Mercari Japan, The Luxury Closet, Joli Closet without checking each marketplace manually.
New listing alerts for resale marketplaces | Copit — Get new listing alerts for Vinted, Vestiaire, Grailed, Depop, Poshmark, Mercari, Mercari Japan, The Luxury Closet, Joli Closet in one resale sourcing feed.
Mercari alert bot for US resale listings | Copit — Use Copit as a Mercari alert bot for new US listings, saved-search monitoring, price filters, categories, brands, and condition-focused resale alerts.
Reseller sourcing bot across 9 marketplace sources | Copit — Copit is a reseller sourcing bot for buyers and resellers who want one live feed across Vinted, Vestiaire, Grailed, Depop, Poshmark, Mercari, Mercari Japan, The Luxury Closet, and Joli Closet.
Anti-scam alerts for resale marketplaces | Copit — Learn how Copit helps you reduce scam risk by surfacing risky sellers, suspicious listings, and obvious copy signals earlier in your workflow.
Public library
Explore related marketplace pages, safety guides, comparisons, and resale workflows from Copit.
Start here
Resale alert bot for new marketplace listings | Copit — Use Copit as a resale alert bot for new listing alerts across Vinted, Vestiaire, Grailed, Depop, Poshmark, Mercari, Mercari Japan, The Luxury Closet, Joli Closet.
Reseller sourcing bot across 9 marketplace sources | Copit — Copit is a reseller sourcing bot for buyers and resellers who want one live feed across Vinted, Vestiaire, Grailed, Depop, Poshmark, Mercari, Mercari Japan, The Luxury Closet, and Joli Closet.
Mercari alert bot for US resale listings | Copit — Use Copit as a Mercari alert bot for new US listings, saved-search monitoring, price filters, categories, brands, and condition-focused resale alerts.
Vinted bot for instant resale alerts | Copit — Use Copit as a safer Vinted bot alternative: instant listing alerts, margin checks, and one feed across nine live resale marketplaces.
Vinted monitor for new listings | Copit — Monitor Vinted searches with Copit, then expand the same alert workflow to Vestiaire, Grailed, Depop, Poshmark, Mercari US, and Mercari Japan.
Vinted monitoring tool | Copit — Use Copit for Vinted alert tool when you need continuous monitoring for Vinted searches in one resale sourcing feed.
Mercari Japan monitoring tool | Copit — Use Copit for Mercari Japan alert tool when you need メルカリ 監視ツール and active marketplace monitoring in one resale sourcing feed.
The Luxury Closet alert tool | Copit — Use Copit for The Luxury Closet alert tool when you need The Luxury Closet monitoring for international designer resale searches in one resale sourcing feed.
Joli Closet alert tool | Copit — Use Copit for Joli Closet alert tool when you need Joli Closet monitoring for international designer resale searches in one resale sourcing feed.
Multi marketplace alert app | Copit — multi marketplace alert app for buyers and resellers who need one app for multi-marketplace resale alerts across nine live sources.
Multi marketplace luxury sourcing | Copit — multi marketplace luxury sourcing for buyers and resellers who need luxury sourcing across Vestiaire, The Luxury Closet, Joli Closet, and the wider Copit feed.
Vestiaire alerts and new listing alerts | Copit — Use Copit for Vestiaire alerts, saved-search monitoring, and new designer listings in one live feed with Vinted, Grailed, Depop, and Poshmark.
Poshmark alerts for closet resale | Copit — Use Copit for Poshmark alerts across US closet resale, handbags, shoes, jewelry, dresses, fashion brands, and home categories.
Mercari alerts for US resale listings | Copit — Use Copit for Mercari alerts across US fashion, sneakers, electronics, collectibles, home goods, brands, conditions, and price-filtered searches.
Mercari Japan alerts for resale sourcing | Copit — Use Copit for Mercari Japan alerts across Japanese resale listings, fashion, accessories, collectibles, brands, conditions, and price-filtered searches.
Buy with fewer doubts
Anti-scam alerts for resale marketplaces | Copit — Learn how Copit helps you reduce scam risk by surfacing risky sellers, suspicious listings, and obvious copy signals earlier in your workflow.
What to do after a marketplace scam | Copit — Learn the first steps to take if you think you were targeted by a marketplace scam, including evidence, payment records, and account reporting.
Find better deals
How to monitor multiple marketplaces at once | Copit — A practical workflow for monitoring Vinted, Vestiaire, Grailed, Depop, Poshmark, Mercari, The Luxury Closet, and Joli Closet without turning your sourcing into separate routines.
Saved search alerts across resale marketplaces | Copit — Build saved search alerts for Vinted, Vestiaire, Grailed, Depop, Poshmark, Mercari, Mercari Japan, The Luxury Closet, Joli Closet without checking each marketplace manually.
New listing alerts for resale marketplaces | Copit — Get new listing alerts for Vinted, Vestiaire, Grailed, Depop, Poshmark, Mercari, Mercari Japan, The Luxury Closet, Joli Closet in one resale sourcing feed.
Vestiaire saved search alerts guide | Copit — Set up Vestiaire saved search alerts that stay useful: tighter filters, better luxury resale signals, and one Copit live feed.
Vestiaire new listing alerts | Copit — Get Vestiaire new listing alerts for luxury resale searches and review new designer items from one Copit live feed.
How to install Copit on iPhone and Android — Install Copit as a Home Screen app on iPhone or Android, refresh the PWA safely, and fix the common blank-screen install issue.
Sniper mode vs profit mode | Copit — Learn when to use Sniper Mode, when to use Profit Mode, and how to switch an existing Copit alert from sniper to profit.
What Copit credits are for — Understand Copit credits, when Profit Mode uses them, and why normal Sniper Mode alert monitoring does not spend credits.
Monthly vs yearly billing in Copit — Learn how Copit monthly and yearly billing work, how to start yearly, and how monthly subscribers can schedule a yearly switch at renewal.
How to manage My Alerts in Copit — Create, edit, duplicate, pause, switch modes, and review Copit alerts from the My Alerts page.
The best apps for resale sourcing | Copit — Learn the best apps for resale sourcing with a practical workflow built around separate seller-ops tools from true sourcing and alerting tools.
Vinted new listing alerts | Copit — Use Copit for Vinted new listing alerts when you need fresh listings as soon as they match a saved search in one resale sourcing feed.
Vinted saved search alerts | Copit — Use Copit for Vinted saved search alerts when you need saved-search monitoring without rebuilding filters manually in one resale sourcing feed.
Vinted free bot alerts | Copit — Use Copit for Vinted alerts when you need free alert options, trial expectations, and what paid monitoring adds in one resale sourcing feed.
Vinted safe bot guide | Copit — Use Copit for Vinted alerts when you need safer alert workflows, account-risk limits, and avoiding checkout automation claims in one resale sourcing feed.
Vinted Discord alerts | Copit — Use Copit for Vinted alerts when you need routing fresh Vinted matches into Discord while keeping phone alerts available in one resale sourcing feed.
Vinted reseller sourcing alerts | Copit — Use Copit for Vinted reseller sourcing when you need buyer and reseller alert workflows for underpriced Vinted items in one resale sourcing feed.
Vinted snipe bot alternative | Copit — Replace risky Vinted snipe-bot promises with fast alerts, cleaner filters, seller review, and nine-marketplace sourcing in Copit.
Vestiaire new listing alerts | Copit — Get Vestiaire new listing alerts for luxury resale searches and review new designer items from one Copit live feed.
Vestiaire saved search alerts guide | Copit — Set up Vestiaire saved search alerts that stay useful: tighter filters, better luxury resale signals, and one Copit live feed.
Vestiaire Collective designer bag alerts | Copit — Use Copit for Vestiaire Collective alerts when you need designer bag alerts with brand, condition, and price filters in one resale sourcing feed.
Vestiaire Collective luxury brand alerts | Copit — Use Copit for Vestiaire Collective alerts when you need luxury-brand monitoring across designer names and categories in one resale sourcing feed.
Vestiaire Collective free alert options | Copit — Use Copit for Vestiaire Collective alerts when you need free native options versus a unified paid alert layer in one resale sourcing feed.
Grailed new listing alerts | Copit — Use Copit for Grailed new listing alerts when you need fresh listings as soon as they match a saved search in one resale sourcing feed.
Grailed saved search alerts | Copit — Use Copit for Grailed saved search alerts when you need saved-search monitoring without rebuilding filters manually in one resale sourcing feed.
Grailed rare grail alerts | Copit — Use Copit for Grailed alerts when you need rare-piece and grail monitoring with exact designer terms in one resale sourcing feed.
Grailed streetwear alerts | Copit — Use Copit for Grailed alerts when you need streetwear alerts by designer, brand, size, and price band in one resale sourcing feed.
Grailed archive fashion alerts | Copit — Use Copit for Grailed alerts when you need archive-fashion alerts for designer and collection-specific searches in one resale sourcing feed.
Grailed sneaker alerts | Copit — Use Copit for Grailed alerts when you need sneaker alerts with model, size, condition, and resale-margin filters in one resale sourcing feed.
Depop new listing alerts | Copit — Use Copit for Depop new listing alerts when you need fresh listings as soon as they match a saved search in one resale sourcing feed.
Depop saved search alerts | Copit — Use Copit for Depop saved search alerts when you need saved-search monitoring without rebuilding filters manually in one resale sourcing feed.
Depop weekly alert alternative | Copit — Use Copit for Depop alerts when you need weekly native saved-search alerts versus faster active monitoring in one resale sourcing feed.
Depop vintage alerts | Copit — Use Copit for Depop alerts when you need vintage alerts using era, material, size, and brand language in one resale sourcing feed.
Depop Y2K alerts | Copit — Use Copit for Depop alerts when you need Y2K trend alerts with price and size filters in one resale sourcing feed.
Depop brand alerts | Copit — Use Copit for Depop alerts when you need brand alerts for Depop buyers and resellers in one resale sourcing feed.
Depop free alert options | Copit — Use Copit for Depop alerts when you need free options and the workflow gap Copit fills in one resale sourcing feed.
Poshmark new listing alerts | Copit — Use Copit for Poshmark new listing alerts when you need fresh listings as soon as they match a saved search in one resale sourcing feed.
Poshmark saved search alerts | Copit — Use Copit for Poshmark saved search alerts when you need saved-search monitoring without rebuilding filters manually in one resale sourcing feed.
Poshmark brand-new listing alerts | Copit — Use Copit for Poshmark new listing alerts when you need brand-new listing notifications separate from price-drop noise in one resale sourcing feed.
Poshmark closet alerts | Copit — Use Copit for Poshmark alerts when you need closet and seller monitoring without drowning in social notifications in one resale sourcing feed.
Poshmark price-drop alerts | Copit — Use Copit for Poshmark alerts when you need price-drop rules and when a new-listing alert matters more in one resale sourcing feed.
Poshmark reseller sourcing alerts | Copit — Use Copit for Poshmark reseller sourcing when you need Poshmark sourcing alerts for resellers in one resale sourcing feed.
Mercari new listing alerts | Copit — Use Copit for Mercari new listing alerts when you need fresh listings as soon as they match a saved search in one resale sourcing feed.
Mercari saved search alerts | Copit — Use Copit for Mercari saved search alerts when you need saved-search monitoring without rebuilding filters manually in one resale sourcing feed.
Mercari price-drop alerts | Copit — Use Copit for Mercari alerts when you need price-drop and liked-item monitoring separated from new-listing alerts in one resale sourcing feed.
Mercari collectible alerts | Copit — Use Copit for Mercari alerts when you need collectible alerts for cards, figures, games, and niche items in one resale sourcing feed.
Mercari electronics alerts | Copit — Use Copit for Mercari alerts when you need electronics alerts with model, condition, and price filters in one resale sourcing feed.
Mercari reseller sourcing alerts | Copit — Use Copit for Mercari reseller sourcing when you need Mercari US alerts for reseller sourcing in one resale sourcing feed.
Mercari Japan new listing alerts | Copit — Use Copit for Mercari Japan new listing alerts when you need メルカリ 新着通知 and fresh Japanese listings in one resale sourcing feed.
Mercari Japan saved search alerts | Copit — Use Copit for Mercari Japan saved search alerts when you need メルカリ 保存した検索条件の新着 and saved-search monitoring in one resale sourcing feed.
Mercari Japan price-drop alerts | Copit — Use Copit for Mercari Japan alerts when you need メルカリ 値下げ通知 and when price drops differ from new listings in one resale sourcing feed.
Mercari Japan reseller sourcing | Copit — Use Copit for Mercari Japan reseller sourcing when you need メルカリ せどり ツール and 仕入れ workflows in one resale sourcing feed.
Mercari Japan collectible alerts | Copit — Use Copit for Mercari Japan alerts when you need collectibles, figures, cards, and niche Japanese inventory in one resale sourcing feed.
The Luxury Closet new arrivals alerts | Copit — Use Copit for The Luxury Closet new listing alerts when you need new-arrival alerts for designer bags, shoes, watches, and accessories in one resale sourcing feed.
The Luxury Closet saved search alerts | Copit — Use Copit for The Luxury Closet saved search alerts when you need saved-search monitoring for narrow luxury resale filters in one resale sourcing feed.
The Luxury Closet designer bag alerts | Copit — Use Copit for The Luxury Closet alerts when you need designer bag alerts with brand, condition, and price filters in one resale sourcing feed.
The Luxury Closet luxury resale alerts | Copit — Use Copit for The Luxury Closet alerts when you need luxury resale alerts from a managed international catalogue in one resale sourcing feed.
Joli Closet new listing alerts | Copit — Use Copit for Joli Closet new listing alerts when you need new listing alerts for designer bags, accessories, shoes, and clothing in one resale sourcing feed.
Joli Closet saved search alerts | Copit — Use Copit for Joli Closet saved search alerts when you need saved-search monitoring for precise brand and price filters in one resale sourcing feed.
Joli Closet designer bag alerts | Copit — Use Copit for Joli Closet alerts when you need designer bag alerts with brand and price context in one resale sourcing feed.
Joli Closet luxury resale alerts | Copit — Use Copit for Joli Closet alerts when you need luxury resale alerts across Joli Closet and the wider Copit feed in one resale sourcing feed.
Resale alert latency benchmark | Copit — resale alert latency benchmark for buyers and resellers who need a methodology page for measuring how quickly alert tools surface new listings.
Resale profit calculator | Copit — resale profit calculator for buyers and resellers who need margin checks before acting on a fresh resale listing.
Designer bag alerts | Copit — designer bag alerts for buyers and resellers who need designer bag alerts across Vestiaire, The Luxury Closet, Joli Closet, and other resale sources.
Second hand luxury alerts | Copit — second hand luxury alerts for buyers and resellers who need second-hand luxury alerts for designer bags, shoes, accessories, and premium clothing.
Pre owned designer alerts | Copit — pre owned designer alerts for buyers and resellers who need pre-owned designer alerts with price, condition, and source-market context.
Vinted best alert tools | Copit — Use Copit for Vinted best alert tools when you need tool comparison, native alert limits, and when Copit is the stronger fit in one resale sourcing feed.
Vinted native alerts versus Copit | Copit — Use Copit for Vinted native alerts versus Copit when you need the difference between marketplace-native notifications and Copit's unified feed in one resale sourcing feed.
Vinted best bots | Copit — Vinted best bots for buyers and resellers who need Vinted bot and alert-tool comparisons without promising automated buying.
Vinted bot pricing | Copit — Vinted bot pricing for buyers and resellers who need pricing comparisons for Vinted bots and alert tools.
Vinted alternatives | Copit — Use Copit for Vinted native alerts versus Copit when you need alternatives to Vinted-only tools when users need multi-market coverage in one resale sourcing feed.
Vestiaire Collective best alert tools | Copit — Use Copit for Vestiaire Collective best alert tools when you need tool comparison, native alert limits, and when Copit is the stronger fit in one resale sourcing feed.
Vestiaire Collective native alerts versus Copit | Copit — Use Copit for Vestiaire Collective native alerts versus Copit when you need the difference between marketplace-native notifications and Copit's unified feed in one resale sourcing feed.
Grailed best alert tools | Copit — Use Copit for Grailed best alert tools when you need tool comparison, native alert limits, and when Copit is the stronger fit in one resale sourcing feed.
Grailed native alerts versus Copit | Copit — Use Copit for Grailed native alerts versus Copit when you need the difference between marketplace-native notifications and Copit's unified feed in one resale sourcing feed.
Depop best alert tools | Copit — Use Copit for Depop best alert tools when you need tool comparison, native alert limits, and when Copit is the stronger fit in one resale sourcing feed.
Depop native alerts versus Copit | Copit — Use Copit for Depop native alerts versus Copit when you need the difference between marketplace-native notifications and Copit's unified feed in one resale sourcing feed.
Poshmark best alert tools | Copit — Use Copit for Poshmark best alert tools when you need tool comparison, native alert limits, and when Copit is the stronger fit in one resale sourcing feed.
Poshmark native alerts versus Copit | Copit — Use Copit for Poshmark native alerts versus Copit when you need the difference between marketplace-native notifications and Copit's unified feed in one resale sourcing feed.
Mercari best alert tools | Copit — Use Copit for Mercari best alert tools when you need tool comparison, native alert limits, and when Copit is the stronger fit in one resale sourcing feed.
Mercari native alerts versus Copit | Copit — Use Copit for Mercari native alerts versus Copit when you need the difference between marketplace-native notifications and Copit's unified feed in one resale sourcing feed.
Mercari Japan best alert tools | Copit — Use Copit for Mercari Japan best alert tools when you need メルカリ 監視ツール比較 and third-party alert options in one resale sourcing feed.
Mercari Japan versus Mercari US alerts | Copit — Use Copit for Mercari Japan native alerts versus Copit when you need Mercari Japan versus Mercari US alert differences in one resale sourcing feed.
The Luxury Closet best alert tools | Copit — Use Copit for The Luxury Closet best alert tools when you need tool comparison for The Luxury Closet alerts and broader luxury sourcing in one resale sourcing feed.
The Luxury Closet native alerts versus Copit | Copit — Use Copit for The Luxury Closet native alerts versus Copit when you need native browsing versus Copit's unified feed for luxury resale in one resale sourcing feed.
Joli Closet best alert tools | Copit — Use Copit for Joli Closet best alert tools when you need tool comparison for Joli Closet alerts and international luxury sourcing in one resale sourcing feed.
Joli Closet native alerts versus Copit | Copit — Use Copit for Joli Closet native alerts versus Copit when you need native browsing versus Copit's unified feed for Joli Closet searches in one resale sourcing feed.
Best Vinted bots in Europe | Copit — Compare Souk, V-Tools, Vintybot-style Vinted bots with Copit's safer nine-marketplace alert workflow for European resellers.
Best marketplace alert tools | Copit — best marketplace alert tools for buyers and resellers who need comparison of marketplace alert tools across Vinted, Vestiaire, Grailed, Depop, Poshmark, Mercari US, Mercari Japan, The Luxury Closet, and Joli Closet.
Marketplace alerts comparison | Copit — marketplace alerts comparison for buyers and resellers who need a comparison framework for native alerts, single-market bots, and Copit.
Native alerts vs third party monitoring | Copit — native alerts vs third party monitoring for buyers and resellers who need when marketplace-native alerts are enough and when third-party monitoring helps.
