Deletion of account for inactivity

I would appreciate it if someone would tell me if/why an account would be deleted?
Would an account be deleted because of inactivity?
If YES, what is the time limit? Would it have to be inactive for 3 months, etc.?

To keep it active, would someone need to post a thread within certain time period?
Or, to keep it active, would Admin have to sign in at least every 3 months, etc.?

Thank you for the help.

Itoh

Hello Itoh,
Only Admins have to power to do this:

Admin Panel>Users and Groups>Users>Handle users>And from there,you can do what you want with your users,you can remove names from the list of people if you don't want to inform,delete or deactivate member accounts.