WordPress Add Existing Users – WPMU DEV lets you Quickly bulk add existing users from across an entire network and set user roles.
100% Original Plugin as found on WPMU Dev.
Adding existing users to a site is now as simple as entering the email address attached to their existing username and selecting the level of access you want to grant them.
You can use simple designed forms, so everyone can understand it easily and fill those up.
The plugin is perfect if you want to import multiple users into your new or existing WordPress site.
How to use this plugin ?
A new menu item called Add Existing Users should appear under the Usersnavigation menu in the site admin dashboard.
It is designed for quickly adding existing users to a site in batches of up to 15 users.
Use Add New Users plugin if you want to create and add new users in batches of up to 15 users
To add the existing users, administrators simply enter: