With all the scamming that happens around here, only allowing 50 spots for both outbox and inbox cumulative feels inviting for lost evidence. During ladder reset or hot days, I'm making 250 trades within a few hours and all trades requiring multiple correspondence. I would say 1000 would be more appropriate so I'm not scammed from the devilish individuals associated with BnP as such.
Enjoy the BTC and ETH pump,
Jenkem