Browser Extension — Chrome + Firefox

One-click email verification on any page

Manifest V3 · Chrome · Firefox · Auto-highlight · Color-coded results

What it looks like

Contact: support@email-validaton.com ✓ info@n-software.net ✓
fake@nonexistent-domain-12345.xyz INVALID temp@mailinator.com DISPOSABLE
info@example.com CATCH-ALL user@risky-domain.com RISKY
Hover for details · Scan with one click · Clear highlights instantly

Installation

Chrome / Edge / Brave / Arc

  1. Download the ZIP file
  2. Extract to a folder
  3. Go to chrome://extensions
  4. Enable Developer mode (top right toggle)
  5. Click Load unpacked → select the extracted folder

Firefox

  1. Download the ZIP file
  2. Extract to a folder
  3. Go to about:debugging#/runtime/this-firefox
  4. Click Load Temporary Add-on
  5. Select manifest.json from the extracted folder

How to Use

  1. Click the North Email Validator icon in your toolbar
  2. Enter your API key (from your dashboard)
  3. Click Scan This Page
  4. All email addresses on the page are highlighted with color-coded results
  5. Hover over any highlighted email to see details
  6. Click Clear Highlights to remove annotations

Features

FeatureDescription
One-click scanFind and verify every email on the current page
Color-coded highlightsGreen = valid, Red = invalid/disposable, Orange = risky/catch-all
Confidence badges✓ high, ~ medium, ± low confidence
Hover detailsMouse over any email to see reason + confidence level
Auto-scanOptional — verify emails automatically on every page load
Clear annotationsOne click to remove all highlights and restore original text
Rate-limit safeRespects 60 req/min API limit with automatic spacing

Privacy & Security

Download email-validator-browser-extension.zip Back to Add-ons

v1.0.0 · Manifest V3 · Chrome 88+ · Firefox 109+ · MIT license