babo2015

This plugin adds a new “Plugins” tab to the site edit screen where you can enable or disable plugins for this website. You may enable/disable one at a time or per bulk action. The site admin will only see plugins that are enabled for his site or for the entire network. He still can decide if he wants to activate it or not.
Finally you’ll be able to install plugins that do not show to every single website in your multisite network!
<h3>Enable/Disable plugins for selected sites</h3>
<ol>
<li>Visit Network Admin > Sites and click on the Edit link of one site.</li>
<li>Select the Plugins tab.</li>
<li>Click on the Enable/Disable link beneath each plugin name to enable/disable it for this site or</li>
<li>Select several plugins by checking the corresponding check boxes or all plugins by checking the checkbox in the table header an choose Enable or Disable form the Bulk actions dropdown menu. Then click Apply.</li>
</ol>
You cannot disable a plugin for a site as long as it is activated there.

Multisite Plugin Controller

Enable plugins for selected blogs only on multisite websites (similar to theme functionality)

Boone Gorges

CUNY Academic Commons

If you run a WordPress or BuddyPress installation, you probably know that some of the biggest administrative headaches come from the activation process. Activation emails may be caught by spam filters, deleted unwillingly, or simply not understood. Yet WordPress itself has no UI for viewing and managing unactivated members.
Unconfirmed creates a Dashboard panel under the Users menu (Network Admin > Users on Multisite) that shows a list of unactivated user registrations. For each registration, you have the option of resending the original activation email, or manually activating the user.
Note that the plugin works for the following configurations: 
1. Multisite, with or without BuddyPress 
2. Single site, with BuddyPress used for user registration
There is currently no support for single-site WP registration without BuddyPress.

Unconfirmed

Googled for "wordpress cancel pending users", this plugin can up as one of the top results, so installed, activated, and achieved exactly what I needed, inside of about 30 seconds. Literally perfect.

Did exactly what I needed

Nice, simple little plugin that makes it easy to get a user up and running when you have, for example, email deliverability issues.

Works as advertised

Thank you for this plugin. Not sure why such a feature isn't already part of Core, as it's very useful when managing a multisite!

This should be part of WP Core!

Work on WP 5.8.4 multisite

Allows WordPress admins to manage unactivated users, by activating them manually, deleting their pending registrations, or resending the activation em …

Multisite Plugin Controller vs Unconfirmed