Your options might be limited since you're in a rural area. It would be making a deal with a devil so to speak, but I shipped through Amazon's Fulfillment Center when I lived in the boonies. You send your merchandise to Amazon and then you sell it on their platform and they mail it out. Of course, they take a pretty good cut of the profits and you'll gain no customer loyalty that way, but it's an option that worked for me in the past.