tarppa

Write all login attempts where both username and password are supplied to a log file. The logfile is relative 
to error.log and is called ‘login.log’, the format : “TIMESTAMP USERNAME SUCCESS/FAILURE”.
In practice this plugin is a rewritten version of the wp_authenticate_username_password function from user.php and replaces 
it in the login process.

WP Login Logging

Write all login attempts to a logfile by replacing default wp_authenticate_username_password functionality

webaware

Log emails to the WordPress database for later analysis. Access is restricted to administrators, and emails with WordPress passwords are obfuscated for security / privacy. Useful for diagnosing lost email problems.
Use this plugin with <a href="https://shop.webaware.com.au/downloads/disable-emails/" rel="nofollow ugc">Disable Emails</a> to divert all WordPress emails into logs, especially handy for developers.
Logs are automatically purged after a defined period, set through a settings page in the WordPress admin. Setting the period to 0 prevents logs from being purged. Uninstalling the plugin purges all logs.
<h3>Translations</h3>
Many thanks to the generous efforts of our translators:
<ul>
<li>Czech (cs-CZ) — <a href="http://www.klusik.cz/" rel="nofollow ugc">Rudolf Klusal</a></li>
<li>English (en_CA) — <a href="https://translate.wordpress.org/locale/en-ca/default/wp-plugins/log-emails" rel="nofollow ugc">the English (Canadian) translation team</a></li>
<li>English (en_GB) — <a href="https://translate.wordpress.org/locale/en-gb/default/wp-plugins/log-emails" rel="nofollow ugc">the English (British) translation team</a></li>
<li>French (fr-FR) — <a href="http://www.eticweb.ca/" rel="nofollow ugc">Hugo Catellier</a></li>
<li>Korean (ko_KR) — <a href="https://translate.wordpress.org/locale/ko/default/wp-plugins/log-emails" rel="nofollow ugc">the Korean translation team</a></li>
</ul>
If you’d like to help out by translating this plugin, please <a href="https://translate.wordpress.org/projects/wp-plugins/log-emails" rel="nofollow ugc">sign up for an account and dig in</a>.

Log Emails

Thanks for a plguin, it was thoroughly coded and seems have all that I need.

Simple and useful plugin

Seriously, this plugin is so freakin' helpful. I work on a lot of sites that I have set up on my local development machine and don't have outgoing email set up on purpose. Only rarely do I need access to test those emails. But when I need it, it's typically urgent. This plugin has completely saved the day multiple times over the past month.

Thank you so much for the great work!

Only sad I didn't find this plugin sooner!

I've checked it's functionality and with first sight, it didn't contained vulnerable parts. Thank you.

compact and free from vulnerabilities

Log emails to the database, to enable email problem analysis

WP Login Logging vs Log Emails