Since April 2026, the CNIL has officially clarified its position on the use of tracking pixels in emails. A long-awaited decision… but one that disrupts several well-established practices in relationship marketing.
Open rates, automation, personalization: what used to be standard is now regulated.
But here’s the good news: it’s still possible to stay effective while complying with the new rules.
Tracking Pixels: A Marketing Pillar… Now Challenged
A tracking pixel is an invisible image embedded in an email. When the email is opened, the image loads and allows certain information to be collected: whether the email was opened, when it was read, the device used, and more.
For years, this data has been used to:
- measure campaign performance
- optimize send times and frequency
- personalize communications
In short, a core tool in relationship marketing.
What the CNIL Changes in Practice
The CNIL now considers that most marketing uses of tracking pixels require explicit consent.
This includes:
- measuring open rates to optimize campaigns
- personalizing messages
- scoring and segmentation
- behavior-based multichannel strategies
In other words: everything related to marketing optimization.
Another key point:
Consent to receive emails ≠ consent to be tracked.
A Limited Exception
The CNIL allows some flexibility for certain technical uses, including:
- deliverability (in very specific cases)
- transactional emails (invoices, confirmations, etc.)
However, these cases are strictly limited and do not cover marketing use cases.
What This Means for Marketing Teams
Let’s be honest: the impact is significant.
The following practices are directly affected:
- automations based on “opened / not opened”
- engagement-based follow-up campaigns
- behavioral scoring
- optimization based on open rates
Open rate is becoming a much less reliable metric… and in some cases, unusable without consent.
What’s Next? Toward More Strategic (and Sustainable) MarketingThis shift requires a major evolution: moving from implicit tracking-based marketing to consent- and value-based marketing.
In practical terms:
build relationships based on transparency
rely more on clicks and real actions
prioritize declared data (preferences, interests)
How Dialog Insight Helps You Stay Compliant (and Perform)
The good news: there are simple ways to adapt — especially with tools like Dialog Insight.
Advanced Consent Management
Dialog Insight allows you to:
- manage consent at a granular level (by channel, by purpose)
- document and prove consent
- automatically adapt communications based on user preferences
You meet compliance requirements… without adding operational complexity.
Configurable Behavioral Tracking
With behavioral tracking features, you can:
- enable or disable specific types of tracking
- adjust the level of data granularity
- align your practices with legal requirements
You stay in control of what you collect — and why.
A Data-Driven Approach Focused on What Matters
Rather than relying solely on opens, Dialog Insight enables you to:
- leverage clicks, conversions, and real interactions
- segment based on meaningful behaviors
- build scenarios based on concrete actions
More reliable data… and often more relevant.
A Sustainable Vision of Relationship Marketing
What the CNIL is enforcing today is also an opportunity: to build marketing that is:
- more transparent
- more respectful
- more strategic
Dialog Insight supports this approach by enabling:
- responsible hyper-personalization
- smart data usage
- performance that doesn’t rely solely on invisible tracking
The CNIL’s Recommendation Marks a Turning Point
Tracking pixels are no longer just a technical tool — they are now a lever governed by strict rules.
But rather than seeing this as a constraint, it’s an opportunity to evolve your practices.
Toward marketing that is more human, more intelligent… and more sustainable.