LeadsLocales
A lead-generation platform for freelancers, agencies and B2B sellers in Argentina.
Freelancers, marketing agencies and B2B sellers in Argentina waste hours finding local businesses on Google Maps, copying data by hand and writing outreach one by one. Global tools like Apollo or Hunter don’t cover Argentine SMBs and don’t integrate with WhatsApp — the main commercial channel in the country.
LeadsLocales builds verified intelligence on local businesses across Argentina, classifies them by digital presence (no site, social only, basic, own site) and lets users filter by area, industry and rating. Contacts unlock with monthly credits, and users reach out with pre-built, industry-personalized WhatsApp and email messages — all tracked in a built-in CRM.
Everything in one platform
56,000+ business database
Verified Google Maps data: phone, email, web, rating, reviews and hours, with automatic deduplication.
Digital presence classification
Each business is tagged as No Site, Social Only, Basic Site or Own Site to spot opportunities.
Advanced filters
By area, industry (42 categories), web status and rating. Filters live in the URL to share searches.
Credits and unlock
Contacts unlock with monthly credits and stay yours forever, even if you cancel.
Pre-built WhatsApp messages
Industry-personalized messages with a ready-to-send wa.me link.
Editable email templates
Subjects and bodies with dynamic variables (name, industry, area, rating) per industry and web status.
Built-in CRM
Tracking with 6 statuses, notes, reminders and filters. No external tools.
MercadoPago subscriptions
4 plans with recurring billing via MercadoPago PreApproval and an automatic activation webhook.
Admin panel
Real-time metrics, user management with plan override and an activity log.
CSV export
Paid plans export their unlocked leads to use in external tools.
56K+
businesses indexed
42
business categories
80+
geographic areas
17K+
leads with email
Built end-to-end
Frontend
- React 18
- Vite
- Tailwind CSS
Backend
- Node.js 22
- Express
- JWT (access + refresh)
Database
- SQLite (better-sqlite3, WAL)
Infrastructure
- VPS Ubuntu
- Nginx
- PM2
- SSL Let’s Encrypt
Integrations
- Google Places API
- MercadoPago
- Zoho / Gmail SMTP
Scraper
- Python 3
- Google Places
- Email extractor propio
The why behind the build
SQLite in production, on purpose
For a SaaS with low concurrent writes, SQLite in WAL mode delivers <10ms reads with no network latency and trivial backups. Queries are standard SQL, so a PostgreSQL migration is ready if volume grows.
Permanent unlocked leads
Unlocked contacts are stored forever, even on cancellation. It builds trust ("I don’t lose what I paid for") and lowers churn. The Agency plan bypasses credits with a query flag.
place_id dedup and 30-day re-check
Each business is keyed by its Google place_id, avoiding duplicates on re-scans. A date field re-queries the API only for data older than 30 days, optimizing usage.
Templates with 3-level dynamic resolution
Outreach matches channel + web status + industry, with progressive fallbacks. Variables resolve at runtime against the lead and the user profile, giving each user their own templates.
Dual auth with refresh token rotation
Short access token (15 min) for security, long refresh (7 days) for comfort, rotated on each use and invalidated on logout. Rate limiting differentiated per endpoint.
The product in action
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