Hi @wf_brevo , thanks for posting on this community.
Yes you can: Automation for email campaign not opened - #14 par ahudavert
Create a segment of the people that should be receiving the email, and then create an automation that, every month, will send an email to the people of this segment.
Just don’t forget to check the box that will allow your contacts to enter the workflow multiple times.
Does this make sense? If not, tell me, I’ll give you screenshots.