@Djordje Novakovic, Thanks for posting in Q&A. From your description, i know we have set device compliance policy to send email at 31 days, 45 days and 60 days. But it sends email every day. This is abnormal. Please open case to look into logs to investigate on this. Here is a link with the steps to open case:
https://learn.microsoft.com/en-us/mem/get-support
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