MercariAlert — New Listing Notifier for Mercari
By SwiftLayer
Instant notifications for new Mercari listings that match your saved searches.
Time on the storeUnder 6 monthsA rough range, not an exact date
Store users10As shown on the Chrome Web Store
Chrome Web Store ratingNot rated yetNo store ratings yet
Last store update27 Sep 2026Version 1.0.3, 13 days ago
Inside the extension
Product image 1 of 3Reviews
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The maker
SwiftLayer has 18 listings on the store. Updates most of their listings often.
- Listings
- 18
- Combined store users
- ≈132
- Store Featured
- 0
- Updated in the last 90 days
- 18 of 18
- FBM Alert — Facebook Marketplace Notifier51 users · updated 2 days ago
- PoshAlert — Poshmark New Listing Notifier15 users · updated 2 days ago
- DepopAlert — New Listing Notifier12 users · updated 2 days ago
- CraigsAlert — Craigslist Deal Notifier6 users · updated 13 days ago
Combined users can count the same person more than once. See all 18 listings
Ext Watch AI
Should you build in this niche?
One research report for MercariAlert — New Listing Notifier for Mercari. Reports come with Plus, Pro and Max.
- Takeaway & demandCited takeaway and search volumes
- Traffic & domainPopularity rank, visits and authority
- Money & pricingPlans and prices from the maker’s site
- ReviewsComplaints and praise, quoted
- Competitors & ranksRank against the closest listings
- Build opportunityWhat to build and how to position it
- Every number shows its source and date
- Ready in a minute or two
- Report and PDF yours for 30 days