About this bot
HEY Email Privacy Proxy is a image proxy associated with 37signals, LLC and used for email image privacy proxy.
The primary identifying User-Agent token is hey.com/imageproxy. Representative HTTP request identity: hey.com/imageproxy Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36.
Directory status: Active. Identity classification: Verified with High confidence. Identity type: official documented.
robots.txt is not used as the primary access-control mechanism for this request model.
Common use: fetching and caching images explicitly referenced in emails viewed by HEY users so image hosts do not receive the user’s IP address or viewing context.
Risk classification: Neutral. Recommended handling is to evaluate the request context before allowing, rate-limiting, or blocking.
How to identify this bot
- User-agent and crawler identifiers
-
hey.com/imageproxyhey.com/imageproxy Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36
Details
- Kind
- Image proxy
- Family
- HEY
- Purpose
- Email image privacy proxy
- Common Use
- fetching and caching images explicitly referenced in emails viewed by HEY users so image hosts do not receive the user’s IP address or viewing context
- Respects robots.txt
- No
Verification
- Identity Type
- Officially documented
- Evidence Method
- Match the `hey.com/imageproxy` User-Agent prefix and corroborate with HEY-specific client hints or reverse DNS.
- Detection Notes
- The User-Agent begins with `hey.com/imageproxy`; corroborate with the `sec-ch-ua` identifier and, when useful, reverse DNS for the published HEY proxy hostname.
Website controls
- Robots.txt Snippet
# robots.txt is not a reliable control for this request model. Use server-side controls if restriction is required.