Switch to Protonmail Reason #9: Stop advertisers from learning the exact time you read an email through known pixels

The moment you open a message can become another behavioral signal for automated targeting.

Why this matters

The moment you open a message can become another behavioral signal for automated targeting. Privacy is easier to defend before this information is collected than after it has spread.

The protection

Proton removes known tracking pixels before they can report your open time.

Take action

Keep protection enabled rather than trusting every newsletter. This does not stop a sender from observing a later purchase or site visit. Email protection depends on the route and settings. Ordinary mail involving outside providers is not automatically end-to-end encrypted, and email metadata is not universally hidden.

Sources

Proton email tracker protection.