PasqualePuzio

This plugin sends an email to the administrator for each login. The goal of this plugin is to improve the security of your website and keep under control all the accesses to your website.
You can customize the email template and exclude from notifications the admin access.
For further information and support contact me visiting my website or the official plugin support page: 
– <a href="http://www.pasqualepuzio.it" rel="nofollow ugc">WordPress Consultant & Specialist</a> 
– <a href="http://www.pasqualepuzio.it/plugin-wordpress/login-alert/" rel="nofollow ugc">WordPress Login Alert Plugin/a></a>

Login Alert

This plugin sends an email to the administrator for each login.

Alex King

Crowd Favorite

If you’ve decided to move things around on your site, you might overlook a few redirects and end up with some broken URLs. This will help you catch those so you can take care of them.

404 Notifier

Log 404 (file not found) errors on your site and get them delivered to you via e-mail or RSS.

Login Alert vs 404 Notifier