It sounds like you have some of the default rules enabled. They are, by design, very broad. We'd rather over-report than under-report and have you miss something. That said, there's some simple things that may help.
Take this group of rules for example:
The highlighted rule will trigger for any user account update, so that's one e-mail. Is a user being enabled an update? Yes, so that triggers the high-lighted rule and the Account Enabled rule. It'll also trigger the "Account Events" rule, so unlocking an account is sending out three e-mails. Do you really care about getting notified for every user account event and property update? Probably not, so disable the really broad rules and only activate the specific rules you care about, like lockouts and enables.
Many of the template rules overlap in this way, so you have to make some determinations of just how much noise you want from LEM.