This plugin when activated automatically redirects all email sent through wp_mail/phpmailer to the user currently logged in or the site administrator.
The redirected email contains information about where the original email would have been sent to.
Use this plugin if you want to test email-sending features without actually sending emails our to anyone but yourself. I wrote this plugin to ease debugging with subscribe2.
Since Version 1.2 you can choose whether to redirect all email to the currently logged in user (default), the site administrator (only wpmu) or the blog administrator.

Mail Debug

Redirects all email sent through wordpress to the user currently logged in or the site administrator.

Kevin Burkholder

{eac}SimpleSMTP is an <a href="https://eacDoojigger.earthasylum.com/" rel="nofollow ugc">{eac}Doojigger</a> extension which adds SMTP server configuration for WordPress so that all email sent from your WordPress site will be sent through your SMTP mail server.
<blockquote>
What is SMTP? … Simple Mail Transfer Protocol
</blockquote>
{eac}SimpleSMTP options include…
<ul>
<li>
SMTP Server Name
The outgoing mail server name. Typically something like smtp.your_email_domain.com.
</li>
<li>
SMTP Port
The mail server port to use. Typically, port 25 = no encryption, port 465 = SSL encryption, port 587 = TLS encryption.
</li>
<li>
SMTP Encryption
Does your mail server use encryption?
</li>
<li>
SMTP User Name
The email address/username used to authenticate with your mail server.
</li>
<li>
SMTP Password
The password used to authenticate with your mail server.
</li>
<li>
Send From Name
The default name used when sending email.
</li>
<li>
Send From Email
The default email address used when sending email.
</li>
<li>
Override Senders
Always send from above name/address (overriding other scripts).
</li>
<li>
SMTP Debugging
Enable capture and logging of wp_mail and phpMailer debugging data.
</li>
<li>
Default Headers
Add custom headers to all outgoing emails.
</li>
<li>
Send a Test
Send a test email to ensure your configuration is working.
</li>
</ul>
<h4>Filters</h4>
Two filters are available to retrieve the Send From Name and/or Send From Email
simpleSMTP_from_name
<pre><code>$sendFromName = apply_filters( 'simpleSMTP_from_name', get_bloginfo('name') )
</code></pre>
simpleSMTP_from_email
<pre><code>$sendFromEmail = apply_filters( 'simpleSMTP_from_email', get_bloginfo('admin_email') )
</code></pre>
<h4>Additional Information</h4>
<ul>
<li>{eac}SimpleSMTP is an extension plugin to and requires installation and registration of <a href="https://eacDoojigger.earthasylum.com/" rel="nofollow ugc">{eac}Doojigger</a>.</li>
</ul>
<h3>Copyright</h3>
<h4>Copyright © 2019-2025, EarthAsylum Consulting, distributed under the terms of the GNU GPL.</h4>
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should receive a copy of the GNU General Public License along with this program. If not, see <a href="https://www.gnu.org/licenses/" rel="nofollow ugc">https://www.gnu.org/licenses/</a>.

{eac}Doojigger Simple SMTP Extension for WordPress

Send email using an SMTP email sever. Configure WordPress wp_mail, and phpmailer, to use your SMTP (outgoing) mail server when sending email.

Mail Debug vs {eac}Doojigger Simple SMTP Extension for WordPress