holzhannes

pCoLaSD

This plugin configures WordPress and WordPress MU to use a SMTP server when sending emails instead of the default PHP <code>mail()</code> function.
You will configure your SMTP settings in your <code>wp-config.php</code> file instead of the settings page. 
The advantage is that no admin of your blog can read the settings. 
And you only have to place your settings once in cases of a WordPress MU installation.
A sample configuration:
<pre><code>/**
 * WordPress SMTP server
 */
define('WP_SMTP_HOST', 'mail.example.com');
define('WP_SMTP_PORT', 25); // obligatory - default: 25
define('WP_SMTP_ENCRYPTION', 'tls'); // obligatory ('tls' or 'ssl') - default: no encryption
define('WP_SMTP_USER', 'username'); // obligatory - default: no user
define('WP_SMTP_PASSWORD', 'password'); // obligatory - default: no password
define('WP_SMTP_FROM', 'John Doe <john.doe@example.com>'); // obligatory - default: no custom from address
define('WP_SMTP_REPLYTO', 'Jane Doe <jane.doe@example.com>'); // obligatory - default: no custom reply to address
</code></pre>

WP SMTP Config

Configure an external SMTP server in your config file.

Scott Reilly

Configure SMTP mailing in WordPress, including support for sending email via SSL/TLS (such as Gmail).
This plugin is the official successor to the original SMTP plugin for WordPress (wpPHPMailer).
Use this plugin to customize the SMTP mailing system used by default by WordPress to handle outgoing emails. It offers you the ability to specify:
<ul>
<li>SMTP host name</li>
<li>SMTP port number</li>
<li>If SMTPAuth (authentication) should be used</li>
<li>SMTP username</li>
<li>SMTP password</li>
<li>If the SMTP connection needs to occur over ssl or tls</li>
</ul>
In addition, you can instead indicate that you wish to use Gmail to handle outgoing email, in which case the above settings are automatically configured to values appropriate for Gmail, though you’ll need to specify your Gmail email address (including the “@gmail.com”) and password.
Regardless of whether SMTP is enabled, the plugin provides you the ability to define the name and email of the ‘From:’ field for all outgoing emails.
A simple test button is also available that allows you to send a test email to yourself to check if sending email has been properly configured for your site.
Links: <a href="https://coffee2code.com/wp-plugins/configure-smtp/" rel="nofollow ugc">Plugin Homepage</a> | <a href="https://wordpress.org/plugins/configure-smtp/" rel="ugc">Plugin Directory Page</a> | <a href="https://github.com/coffee2code/configure-smtp/" rel="nofollow ugc">GitHub</a> | <a href="https://coffee2code.com" rel="nofollow ugc">Author Homepage</a>

Configure SMTP

does exactly what it says. Been working like a charm 

simple and sweet

Most of my users and customers ask me: why my mails are not being sent? Why some mails sent from my site do not arrives?

The problem are spam filters and things like this, so SMTP is a basic tool to operate a site or ecommerce.

I have used many plugin to do this task but none like this. This solves the problem in an easy and functional way.

Simple and functional way to configure SMTP settings in your WordPress

Configure SMTP mailing in WordPress, including support for sending email via SSL/TLS (such as Gmail).

WP SMTP Config vs Configure SMTP