Indeed, losing emails is really bad. We do our best to avoid this and try to be very reactive when things go south, but it's not possible to guarantee you that we will never lose any emails (no one can).
We acquired the service back in 2017. At the time, it was ranking already well for "free email redirection" so we focused on that. The core service is still free, but we added a lot of features (and continue to do so) in the paid "premium" parts.
I hope I have answered your questions :)