Rui Cruz

TLDR: 
This is a plugin for WordPress websites that sends email notifications to the website admin for successful and failed login attempts. The email includes details like the username, IP address, and browser information.
Geek description: 
This WordPress plugin sends email notifications upon successful and failed logins to the website’s admin. The plugin functions by hooking into the ‘wp_login’ and ‘wp_login_failed’ WordPress actions, and triggering the ‘send_login_notification’ and ‘send_login_failed_notification’ functions respectively.
The ‘send_login_notification’ function sends an email to the admin email address specified in the ‘admin_email’ option. The email includes details such as the successful login username, IP address, and browser information. The ‘send_login_failed_notification’ function sends a similar email to the admin, but for failed login attempts.
The plugin uses the wp_mail function to send the emails, and the messages are formatted as HTML for easy readability. The plugin ensures that the data being displayed, such as the username and IP address, is escaped using PHP’s built-in escape functions. This is done to prevent potential security vulnerabilities, such as XSS (Cross-Site Scripting).
In summary, this plugin provides an easy way for website administrators to stay informed of user login activity on their site, while also ensuring that sensitive information is displayed securely.

Login alert by e-mail

This plugin sends email notifications to the website admin on successful and failed logins for each attempt. It helps the website administrator stay i …

Technology Wisdom

TW Login Alert & Tracker is a lightweight yet powerful plugin designed to help administrators monitor login activity and enhance site security. 
It automatically tracks every user login and saves the date/time to their profile. A new “Last Login” column appears in the WordPress Users list, helping you quickly view user activity. 
The plugin also sends real-time email notifications to the site administrator each time a user logs in, including when the admin logs in. You now have full control over these alerts with a dedicated Settings page where you can enable or disable email notifications as needed. 
No configuration is required on activation. However, the Login Alert Settings page (under Settings) gives you the flexibility to toggle notifications anytime.
Features:
<ul>
<li>Tracks each user login and records the timestamp as user meta</li>
<li>Adds a “Last Login” column to the Users admin table</li>
<li>Sends real-time email alerts to the site administrator on every login</li>
<li>Settings page with checkbox to enable or disable email alerts</li>
<li>Emails are sent from a smart “info@yourdomain.com” address dynamically</li>
<li>Fully supports all WordPress user roles (admins, editors, customers, etc.)</li>
<li>Built-in Tutorial page for guidance</li>
<li>Lightweight, fast, and requires no configuration out of the box</li>
</ul>
<h3>License</h3>
This plugin is licensed under the GPL-2.0+ License. You can freely use, modify, and distribute it under the terms of this license. See the full license at: https://opensource.org/licenses/GPL-2.0

TW Login Alert & Tracker

Track who logs in and when — and receive instant email alerts for every login event.

Login alert by e-mail vs TW Login Alert & Tracker