Email Validator
Validate emails in bulk with single-email anatomy, RFC compliance checks, and DNS record lookups.
Parsing & Filtering Options
About This Tool
A professional email validation tool for operations, development, and data-cleansing workflows, featuring both Batch Validator and Syntax Inspector tabs. In batch mode, it supports delimiter splitting and smart regex extraction, with drag-and-drop .txt / .csv import; offers deduplication, case-insensitive matching, and EAI/Unicode (RFC 6530) support. The results dashboard auto-counts total, valid, and invalid emails, shows a Top 5 domain distribution, and splits results into valid/invalid lists with detailed failure reasons, searchable and filterable by reason, plus virtual pagination for massive lists. In single-email mode, it provides email anatomy visualization (Local-part / Domain / TLD), an itemized RFC 5322 compliance checklist, and deep DNS lookups for MX / A / AAAA records via DoH to assess real mail-receiving capability. Supports exporting full reports (CSV) or separate valid/invalid lists (TXT). All processing happens locally in your browser to protect privacy.
Features
- 📥 Bulk Input: Supports separators like newlines, spaces, commas, and semicolons
- 🔍 Smart Extraction: RegEx-based email extraction with trailing-punctuation cleansing
- 📁 File Import: Drag-and-drop .txt / .csv files for bulk parsing
- 🧹 Deduplicate: Optional case-insensitive deduplication
- 🌐 EAI Support: Unicode email compatibility (RFC 6530) for Chinese, Japanese, etc.
- 📊 Summary Stats: Auto count total, valid, invalid, and Top 5 domain distribution
- 🧾 Reason Tags: Shows invalid reasons per email with filter-by-reason support
- 🔬 Single Email Anatomy: Visual breakdown and RFC syntax compliance checklist
- 🌍 DNS Lookup: Query MX / A / AAAA records via DoH
- 📤 Data Export: Export full CSV reports or separate valid/invalid TXT lists
- 📋 Quick Copy: One-click copy for valid or invalid lists, including per-item copy
- 🔒 Privacy Safe: Local-only validation, no uploads