Gnanasekaran Loganathan

Activation mail sent to the new user email once a user registered. The user must activate the account by click activation link in addition to a username and password to log in successfully the first time.
This plugin does not currently work with multi-site. Multi-site uses an activation key system for new registrations already.

User Activation By Email

Require users to click the activation link to access the site which is emailed upon user registration.

scribu

When running WordPress MultiSite, you have a very handy feature called network activation. It allows you to activate a plugin for the entire network of sites. The trouble is that it only does half the job.
Some plugins have an install procedure that is meant to be run only on activation. However, when you do a network activation, that install procedure is only run for the current site. So, you end up with plugins not working properly on all the other sites.
What this plugin does:
<ul>
<li>when doing a network de/activation, it triggers the de/activation hook on all sites in the network</li>
<li>when creating a new site, it triggers the activation hook for all active network plugins on that site</li>
</ul>
Links: <a href="http://scribu.net/wordpress/proper-network-activation" rel="nofollow ugc">Plugin News</a> | <a href="http://scribu.net" rel="nofollow ugc">Author’s Site</a>
<h4>Development</h4>
<ul>
<li>Contribute Code at <a href="https://github.com/scribu/wp-proper-network-activation" rel="nofollow ugc">https://github.com/scribu/wp-proper-network-activation</a></li>
<li>Contribute Translations at <a href="https://translate.foe-services.de/projects/proper-network-activation" rel="nofollow ugc">https://translate.foe-services.de/projects/proper-network-activation</a></li>
</ul>

Proper Network Activation

Avoid errors when using WordPress MultiSite network activation

User Activation By Email vs Proper Network Activation