app/mailers/meter_cat/meter_mailer.rb
module MeterCat
class MeterMailer < ActionMailer::Base
helper MeterCat::MetersHelper
def report
config = MeterCat.config
@range = (Date.yesterday - config.mail_days)..Date.yesterday
@meters = MeterCat::Meter.to_h(@range, config.mail_names)
mail(to: config.to, from: config.from, subject: config.subject)
end
end
end