Yes, we can still track data about your social profiles even if you're not posting through Sendible.
However, it's worth noting that, in order to track information relating to links, eg. clicks, the post will need to be sent through Sendible and the link will need to have been shortened using one of the URL shorteners we provide.
Due to limitations of the APIs of the social platforms, not every activity posted is able to be reported on by Sendible. Notable exceptions include Instagram Reels and IGTV, but there may be others as well.