Display the Last Login for WordPress Users
Wondering how active a certain user is or how long it’s been since he last logged in? Perhaps you need to monitor when your writers or editors last checked into the site.
Whatever the reason, you can keep track of all of your user’s last logins with the WP Last Login plugin. It adds a new column to the WordPress users page where you can see the last login for each user, as pictured here.
This plugin can be very helpful if you’re hoping to clean out your user base and want to remove users who have never logged in or perhaps haven’t logged in for a year or two. Download WP Last Login from the plugin repository to get this column added to your users page.