Core Services
Data Append & Enrichment
Advanced Features
Web Intelligence
Audio Transcription
Intent Data
Phone Tools
Phone Risk & Network
IP & Domain Tools
Top Industries
Phone Validation
IP Intelligence
Email Validation
Multi-Service
Explore
Documentation
Connect
Step-by-step guides to get the most out of 1Lookup
Learn how to detect disposable email addresses via API. A practical disposable email detection API tutorial with curl, Node.js, and Python to block throwaway signups.
Robby Frank
CEO & Founder
A practical guide to email verification in Node.js. Validate emails with fetch, axios, and Express middleware, then add bulk checks, caching, and retries.
Learn how to validate phone numbers with API calls in 5 minutes. A hands-on phone validation API tutorial with curl, Node.js, and Python examples.
