Josh Mckibbin

The <a href="https://kibb.in/ssmtp" rel="nofollow ugc">Simple SMTP Mailer</a> plugin allows you to easily configure WordPress to use SMTP instead of the PHP mail function.
This should only really be used in a development environment.
<h3>Simple SMTP Mailer Settings</h3>
<ul>
<li>Host: The mail server (Defaults to smtp.gmail.com)</li>
<li>Username: The username used for connecting to the SMTP server</li>
<li>Password: The password used for connecting to the SMTP server</li>
<li>Port: The port to use when sending an email (587, 465 or 25. Defaults to 587)</li>
<li>Security: The type of encryption security to use when sending an email (TLS or SSL. Defaults to TLS)</li>
<li>Debug: Enable debugging</li>
</ul>
All settings can be overridden by assigning array values to the SSMTP_MAILER constant in wp-config.php. This is useful for automating local deployment.
<pre><code>define(
 'SSMTP_MAILER',
 array(
 'host' => emailhost.com,
 'username' => username,
 'password' => password,
 'port' => 25,
 'security' => 'SSL'
 )
);
</code></pre>

Simple SMTP Mailer

Simplifies local development by configuring WordPress to use SMTP instead of the PHP mail() function

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.

Simple SMTP Mailer vs {eac}Doojigger Simple SMTP Extension for WordPress