Hello and thank you for reaching out to The Community! If the month of Campaigns you are planning are all unique you will need to create them all in advanced then schedule them to go out. If you are looking to send the same email multiple times over the course of the month you would need to make a copy for each time you would like to schedule it. If there is anything else we can assist with please do not hesitate to ask.
Thanks for the feedback! Also, if you would like to automatically schedule an email to resend to non openers, please take a look at our helpful article that explains exactly how to do that on your scheduling page. Thank you!