You can customize your email preferences via rec.net.
Please sign into rec.net and go to this page (https://rec.net/settings/contact) to set your email preferences. You can either disable emails entirely, or set them to daily/weekly/monthly. 
Summary of Email Settings
New Features - If Rec Room launches a brand new and exciting feature, we may email you about it!
Game Invites - If your friends invite you to something in Rec Room, you may get an email about it!
Friend Requests - We will let you know how many recent friend requests you've gotten.
Your Room Summary - Are you a creator? We can email you stats about your rooms!
New Subscription Rooms - Are you subscribed to other players in Rec Room? We will let you know when they've published a new room.
Photos of You - If you've recently been in photos that other players have taken, we will let you know about it!
Event Invites - If other players invite you to an event, we will email you about it!
Event Reminders - If you replied that you're going to an event, we will send you reminders for when the event is, and a reminder shortly before an event starts!