Marketing email often hides tiny images that tell the sender when and where you opened a message. SipherMail reduces this in two ways.
What SipherMail does#
| Measure | What it does |
|---|---|
| Tracking pixel removal | Known tracking pixels are removed from mail. It matches patterns, so a new or unusual tracker can get through. |
| Image proxy | Remote images load through SipherMail’s servers. The sender sees SipherMail’s server instead of your device. |
What this does not do#
- It does not stop all tracking. Pattern matching cannot catch every tracker.
- Links in a message can still lead to pages that track you once you open them.
Settings#
On iPhone and Android, open the Email Privacy section in Settings. It has:
- Block remote images: images stay unloaded until you tap Load images on that message. Loaded images still come through the proxy.
- Block Tracking Pixels: stops senders tracking when you open emails.
- Strip Tracking Parameters: removes tracking parameters from links.
- Send read receipts: when a sender asks to know the message was read, send the receipt back.
On the web, the image privacy proxy is always on.
Read receipts#
Read receipts are a separate feature from tracking pixels. Only turn on sending them if you want senders to know you read their message.
Related: Security overview.