Denis Yanchevskiy

Allows you to make post, page, custom post elements required: title, content, featured image.
After installing the plugin, you need to go to the Settings -> DCO Post Validator to specify the required elements.

DCO Post Validator

Allows you to make post, page, custom post elements required: title, content, featured image.

ircf

Disable email requirement for user registering/editing.
This plugin hooks the following WordPress functions :
<ul>
<li>wp_user_insert()</li>
<li>wp_user_update()</li>
<li>Admin site email validation</li>
<li>Admin site profile editor</li>
</ul>

Email not required

Disable email requirement for user registering/editing.

DCO Post Validator vs Email not required