(defcustom hashcash-accept-resources `((,user-mail-address nil))
"*An association list mapping hashcash resources to payment amounts.
Resources named here are to be accepted in incoming payments. If the
corresponding AMOUNT is NIL, the value of `hashcash-default-accept-payment'
(defcustom hashcash-accept-resources `((,user-mail-address nil))
"*An association list mapping hashcash resources to payment amounts.
Resources named here are to be accepted in incoming payments. If the
corresponding AMOUNT is NIL, the value of `hashcash-default-accept-payment'