module Net
module Net::SMTPError
class Net::SMTP
class Net::SMTP::Address
class Net::SMTP::Response
class Net::SMTPAuthenticationError
class Net::SMTPFatalError
class Net::SMTPServerBusy
class Net::SMTPSyntaxError
class Net::SMTPUnknownError
class Net::SMTPUnsupportedCommand
net-smtp
0.3.3
# capable?
def capable?(key) return nil unless @capabilities @capabilities[key] ? true : false end