Erwan Guillon

Allow you to send email each time a plugin or WordPress core is updated.
You can also configure Mailjet API to those emails.

AY Update Mailer

Allow you to send email each time a plugin or WordPress core is updated.

Mark Jaquith

Andrew Ozz

Peter Wilson

Andrew Nacin

Aaron Jorbin

This unofficial plugin provides fixes for selected WordPress bugs, so you don’t have to wait for the next WordPress core release. This does not mean you can stop updating WordPress! It just means that you’ll get a few selected fixes more quickly.
Recent fixes:
<ul>
<li>WordPress 6.9
<ul>
<li>Set sender as blank to workaround Sendmail issue when sendmail_from and -f are both used, see <a href="https://core.trac.wordpress.org/ticket/64368" rel="nofollow ugc">WP#64368</a>.</li>
</ul>
</li>
</ul>
Fixes are specific to your version of WordPress. It may be that your version of WordPress has no fixes. That’s fine. Keep the plugin activated and updated, in case you need it for a subsequent version of WordPress!
<h3>Complete Hotfix List</h3>
<ul>
<li>
WordPress 6.9
<ul>
<li>Works around issue where Sendmail fails due to <code>sendmail_from</code> and <code>-f</code> both being used.</li>
</ul>
</li>
<li>
WordPress 3.5
<ul>
<li>Lets you update Twenty Twelve if it is shown as “broken” after installing 3.5</li>
<li>Lets you update WordPress and install or update plugins and themes. (Only some Windows servers running IIS were affected.) You’ll need to <a href="https://codex.wordpress.org/Managing_Plugins#Manual_Plugin_Installation" rel="nofollow ugc">install this plugin manually</a>.</li>
</ul>
</li>
<li>
WordPress 3.4.2
<ul>
<li>Fix adding and updating Custom Fields</li>
</ul>
</li>
<li>
WordPress 3.3
<ul>
<li>Prevent plugin and theme styles from bleeding into the dashboard</li>
<li>Work around a bug for people without built-in JSON support</li>
</ul>
</li>
<li>
WordPress 3.2
<ul>
<li>Include JSON support for people with funky PHP setups</li>
</ul>
</li>
<li>
WordPress 3.1.3
<ul>
<li>Fix a bug that caused <code>post_status</code> to malfunction if passed an array</li>
</ul>
</li>
<li>
WordPress 3.1
<ul>
<li>Fix a bug that caused some taxonomy query manipulations (like excluding categories) to not work like they did before.</li>
</ul>
</li>
<li>
WordPress 3.0.5
<ul>
<li>Prevent KSES from overzealously stripping images and other advanced HTML from Administrator/Editor comments on display.</li>
</ul>
</li>
</ul>

Hotfix

Provides unofficial fixes for selected WordPress bugs, so you don't have to wait for the next WordPress core release.

AY Update Mailer vs Hotfix