Been using mailgun for a while to send nagios alerts from our server using SMTP to various accounts that need to be notified. Instead of sending it to 3 account

Been using mailgun for a while to send nagios alerts from our server using SMTP to various accounts that need to be notified. Instead of sending it to 3 accounts, you send it to one then mailgun sends it off to the accounts you want added. It is perfect and worth the $19. Now I'm unsure if I should just downgrade... but it's not really worth it for the value I get out of Mailgun.