Overview
Flint Engine tracks email engagement through invisible tracking pixels and redirect-based click tracking. This data helps you understand how recipients interact with your campaigns.
How Tracking Works
Open Tracking
When a recipient opens an email, a tiny tracking pixel (1x1 pixel image) is loaded from the server:
- The pixel URL contains the campaign ID and recipient token
- Loading the pixel records an "open" event
- The server returns a transparent 1x1 GIF image
- The recipient sees nothing unusual in the email
Click Tracking
Links in emails are rewritten to pass through the tracking system:
- Original links are replaced with tracking redirect URLs
- When a recipient clicks, they are redirected to the original URL
- The click event is recorded with timestamp and recipient data
Tracking Endpoints
The tracking system uses these URL patterns:
| Route | Purpose |
|---|---|
/em/t/{campaign}/{token}/pixel.gif |
Track email open (pixel) |
/em/c/{campaign}/{token} |
Track link click (redirect) |
/em/v/{campaign}/{token} |
Track email view |
/em/u/{campaign}/{token} |
Unsubscribe link |
Viewing Tracking Data
Navigate to Marketing → Tracking to see:
- Total emails sent
- Unique opens and open rate
- Unique clicks and click rate
- Unsubscribe rate
- Top clicked links
- Engagement by recipient
Campaign Reports
Each campaign has a detailed report at Campaigns → Report:
- Delivery rate (sent vs. bounced)
- Open rate (unique and total opens)
- Click rate (unique and total clicks)
- Unsubscribe count
- Engagement timeline
- Top performing links
- Recipient-level engagement data
Tracking Settings
Configure tracking in Marketing → Settings:
- Track Opens — Enable/disable open tracking per campaign
- Track Clicks — Enable/disable click tracking per campaign
- Global Defaults — Set default tracking preferences for new campaigns
Tracking Limitations
Be aware of these limitations:
- Open tracking requires email clients to load images (some block by default)
- Some email clients pre-fetch pixels, inflating open counts
- Click tracking does not work if recipients copy/paste URLs
- Privacy-focused email clients may block tracking entirely
Tip: Click rates are generally more reliable than open rates for measuring engagement. Focus on click-through rates when evaluating campaign success.