FedEx Account Charges

I’m about to launch an apostille service to my notary business that I suspect will require me to utilize FedEx quite often for shipping & receiving purposes both nationally and occasionally internationally. I’m wondering if there are any other notaries out there who are performing apostille services and if you have been successful in negotiating special rates from FedEx for shipping and receiving. I’d love it if you would share your insights & experiences with me. Thank you.