We have implemented the SSL for tracking pixels but I am still seeing non-ssl tracking pixel links in the emails. Am I missing a configuration somewhere or is this a bug/issue?
Does this mean that marketo does not support SSL links in emails? but only via hsts? I'm trying to figure out why our emails do not have ssl links when they were supposedly implemented.
As I've just described, whether or not your tracking server has an installed cert, links in emails (including the tracking pixel) will still be fetched over http://. It's left up to you to force HTTPS on the initial connection via HSTS.