Record an email open via the tracking pixel
Public 1×1 transparent GIF open-tracking pixel embedded in outbound HTML emails. When the recipient’s mail client loads the image, Orbit verifies the HMAC signature (sig) — which binds the message id, tenant, and send timestamp — and records an email-open engagement event. The endpoint always returns the GIF with a 200, even when the signature is missing or invalid, so a mail client never shows a broken image.
Authorizations
Dashboard JWT token from Clerk
Path Parameters
HMAC-SHA256 signature binding the message id, tenant, and send timestamp. Minted by Orbit when the email is rendered.
Response
A 1×1 transparent GIF served with no-cache headers. Returned whether or not an open was recorded — a missing or invalid signature is silently ignored so the pixel never breaks the email.
The response is of type file.