MyBB Community Forums

Within the installation, you can select:

Reported Posts Medium
Please select from the list how you want reported posts to be dealt with. Storing them in the database is probably the better of the options listed.
Stored in the Database
Sent as Private Messages
Sent via Email

What does this mean?

Members are able to report (tell you) any abusive messages (spam, flood, ...).

It's when they click on at the bottom of the post and send you a report.

If you select "Database", when the report is submitted, moderators and admins will see the notice at the top of the forum "Moderation Notice: There is one unread report"

If you select email/pm, the report will be emailed to the moderators