Common signals
Remote pixels can report more than an open.
Some messages load tiny remote images or uniquely addressed resources. That request may reveal when a message was opened and information derived from the network request.
HyverMail approach
Known tracking elements are detected and neutralized when supported.
The protection layer evaluates remote content patterns and can remove or proxy supported elements. The cleaned message remains readable and any intervention is disclosed.
Honest limits
No filter can promise perfect detection.
Links, personalized wording, and new tracking methods can still reveal information after interaction. HyverMail presents tracking protection as risk reduction, not anonymity.