Good evening Shah and welcome back!
Thank you for reaching out to us.
I would love to help you with this topic.
The short answer is yes.
Let me expand on what I mean by that.
- Technically an event organizer registering on your site with Community Events creates a WordPress user.
- In turn that user is assigned a WordPress User Role
- Each user roles has different capabilities, including the ability to post events.
The good news is that you get to control how that works: https://theeventscalendar.com/knowledgebase/managing-community-events-submissions/
For example, you could decide that you need to approve every event that they submit.
Either way, just like pretty much any behaviour on your site, it is always possible to stop such an email from being sent (if this is what you wish).
Let me know if that helps.
Have a great day!
Geoff B.