I maintain a legacy service at work (I originally wrote it back in 2014) that is responsible for sending eFaxes from our various other services and platforms. I

I maintain a legacy service at work (I originally wrote it back in 2014) that is responsible for sending eFaxes from our various other services and platforms. It's one of the most internally trafficked services we have. We're in the healthcare space. Almost every document created on our different platforms results in a fax being sent.