diff --git a/backend/mailer.py b/backend/mailer.py
index b47fd5d..e5cbdc0 100644
--- a/backend/mailer.py
+++ b/backend/mailer.py
@@ -50,6 +50,7 @@ async def _send_brevo(to: str, subject: str, html: str, plain: str):
         "subject":      subject,
         "htmlContent":  html,
         "textContent":  plain,
+        "headers":      {"X-Mailin-Track-Click": "0", "X-Mailin-Track-Opens": "0"},
     }
     async with httpx.AsyncClient(timeout=15) as client:
         resp = await client.post(