Are email tracking pixels legal?
There is no universal yes-or-no answer for email tracking pixels. Applicable rules and obligations depend on jurisdiction, purpose, parties, data flow, transparency, consent or another lawful basis, and current regulator or court guidance. Receiver-side controls do not determine whether a sender's use is lawful: after client opt-in, Mailshade uses declarativeNetRequest to cancel receiver-side browser requests matching reviewed tracker-pixel endpoints across six web clients. This page gives general technical context, not legal advice.
Questions that affect the analysis
Email tracking can engage privacy, data-protection, electronic-communications or consumer-protection rules. The answer for a specific use can depend on what data is processed, why it is processed, what was disclosed, whether consent or another lawful basis applies, and which jurisdictions govern the sender and recipient.
Regional differences
Rules and regulator guidance differ across countries and can change. For a legal conclusion, consult current official guidance and qualified counsel for the relevant jurisdiction rather than relying on a general product guide.
What receiver-side blocking establishes
Mailshade uses DNR to cancel receiver-side browser requests matching reviewed tracker-pixel endpoints and keeps its detection history in local IndexedDB; core inbox history is not transmitted to Mailshade servers. A cancelled browser request is technical evidence about that tested request, not a legal conclusion or proof of every upstream event. In Gmail, it does not establish whether Google fetched or cached the image earlier.
This is not legal advice
Rules change and depend on the facts and jurisdiction; treat this page as general technical background, not a legal opinion.
FAQ
Are tracking pixels illegal under GDPR?
It cannot be answered in the abstract. The analysis depends on the data flow, purpose, transparency, lawful basis and applicable EU or national rules and guidance. Consult current official guidance or qualified counsel for a specific use.
Is email tracking legal in the United States?
The answer can depend on federal and state law, the data involved, the sender's disclosures and the context. This page does not provide a US legal conclusion; consult current official guidance or qualified counsel.
Does blocking a tracking pixel break any law?
Mailshade cancels matching receiver-side browser requests on the user's device, but this page cannot determine the legal position for every user, organization or jurisdiction. Seek legal advice if a specific policy, contract or regulated environment applies.
Can I prove a sender tracked me?
Mailshade records detected tracker occurrences per sender in local IndexedDB, with tracker URLs reduced to origins and opaque message context retained. It is a personal detection history, not proof that every signal was blocked or legal evidence.
How much does Mailshade cost?
Core protection remains free after a 14-day Pro trial. Paid Pro starts at $3.99 per month or $19 one-time. The source is open under AGPL-3.0 at mailshade.org/source/.