Hello @JudithG655 ,
That's a great question! You would just need to copy your email 11 times, so that you have 12 iterations of it. Then you'll schedule each of those emails for a different month of the year. I do want to mention that you'll still want to periodically check your account to make sure that the emails are still scheduled correctly, in case there are ever any changes or hiccups that might affect your scheduling.