def first(options = nil, &block)
      options = options ? Hash[options] : {}
      options[:what] = :first
      options[:count] ||= 1
      find(options, &block)
    end
def first(options = nil, &block)
      options = options ? Hash[options] : {}
      options[:what] = :first
      options[:count] ||= 1
      find(options, &block)
    end
Get the oldest received email(s)

 Possible options:
   count: number of emails to retrieve. The default value is 1.
   order: order of emails returned. Possible values are :asc or :desc. Default value is :asc.