WhiteAMEX (and others).
ssshhhh...it's a secret I just stumbled into, but I'll share...paypal and amex appear to have kissed and made up.
I am burning up my OPTIMA/Starwood AMEX at paypal in the last 5 days or so. Wanted to give it a few days' trial to see if it was a fluke or what.
Can't speak of the AMEX/GOLD/PLAT series (ie "corporate" cards)...which uniquely were being blocked BY AMEX (not by paypal), while the OPTIMA had a measley $1000/mo paypal limit up until mid last week...then...surprise.
All of a sudden, appears AMEX woke up and realized "this electronic payment thing" ain't goin away. Still appears AMEX has a $1000 PER TRANSACTION limit, as I've had more than one $1000+ transaction that didn't go thru...but when broken into two sub-$1000 transactions...no problems.
So - three cheers for AMEX and paypal for shakin hands and bein friends.
Better late than never.
YMMV.