My employer-provided insurance is UHC, which has a preferred partner situation with OptumRX, a mailorder pharmacy. They give you better rates on your prescription copay if you use them. The mail turn-around time is not great though. It's good for long-term prescriptions, shitty for short term like antibiotics.
My doctor sends short term stuff to a local pharmacy for me to pick up, and my daily long term pills to Optum, who charges my CC and mails them to me. They take about a week to arrive, but you can set it up so they automatically recur, so you always get your next 90 days before your current pills run out.
