Cash still is the best option. I support this argument because everything else leaves a data-trail.
Imo it depends on the sum and level of trust. If you trust your business partners cash surely is the best options. Though i wouldn't go through mail because then you got a security / insurance problem without need for it.
I also support debit cards because i use them myself but only for smaller things.
Otherwise if the sums exceed four figures: Palladium, Osmium, Iridium come to mind.
Cash still is the best option. I support this argument because everything else leaves a data-trail.
Imo it depends on the sum and level of trust. If you trust your business partners cash surely is the best options. Though i wouldn't go through mail because then you got a security / insurance problem without need for it.
I also support debit cards because i use them myself but only for smaller things.
Otherwise if the sums exceed four figures: Palladium, Osmium, Iridium come to mind.