My travel buddies and I are headed to West Africa in May.. investigating getting some visas beforehand (Ghana/Mali/?) but the others at the borders. I've never had to send off for multiple visas at a time, usually we just FedEx the passports to the embassy with a prepaid return FedEx envelope inside. Is it possible to just address the 1st return envelope to the 2nd embassy (with a 2nd return envelope to home address inside)?

Eg. Instead of FedEx -> embassy A -> home -> embassy B -> home, do home -> A -> B -> home

saves a FedEx trip at least.

I know visa services can do this, but usually they want $40-$50 per visa per person..