jploftsocial

<a href="https://#" rel="nofollow ugc">Check-Mail-SMTP</a> plugin allows you to configure a mail server which handles all outgoing email from your website. It takes control of the wp_mail function and use SMTP instead.You can 
take record also.
<h3>Requirements</h3>
<ul>
<li>A self-hosted website running on [WordPress hosting]</li>
</ul>
<h3>SMTP Mailer Settings</h3>
<ul>
<li>SMTP Host: Your outgoing mail server (e.g. smtp.gmail.com).</li>
<li>SMTP Authentication: Whether to use SMTP authentication when sending an email (True/False). If you choose to authenticate you will also need to provide your username and password.</li>
<li>SMTP Username: The username to connect to your SMTP server.</li>
<li>SMTP Password: The password to connect to your SMTP server.</li>
<li>Type of Encryption: The encryption to be used when sending an email (TLS/SSL/No Encryption. TLS is recommended).</li>
<li>SMTP Port: The port to be used when sending an email (587/465/25). If you choose TLS the port should be set to 587. For SSL use port 465 instead.</li>
<li>From Email Address: The email address to be used as the From Address when sending an email.</li>
<li>From Name: The name to be used as the From Name when sending an email.</li>
</ul>
<h3>Check-Mail-SMTP Test Email</h3>
Once you have configured the settings you can send a test email to check the functionality of the plugin.
<ul>
<li>To: Email address of the recipient.</li>
<li>Subject: Subject of the email.</li>
<li>Message: Email body.</li>
</ul>

Check-Mail-SMTP

Configure a SMTP server to send email from your WordPress site. Configure the wp_mail() function to use SMTP instead of the PHP mail() function.

cubefeed

The problem: SMTP email delivery by some hosting providers can be extremely slow. This plugin reconfigures the wp_mail() function to send email using HTTPS (via Elasticemail API) instead of SMTP and creates an options page that allows you to specify various options.
Plugin Settings Options:
<ul>
<li>Enable or Disable Plugin.</li>
<li>Elasticemail API username</li>
<li>Elasticemail assigned API Key</li>
<li>Elasticemail REST API URL</li>
<li>Your account channel variable(optional)</li>
</ul>

ElasticEmail Plugin

Reconfigures the wp_mail() function to send email using HTTPS (via Elasticemail) instead of SMTP and creates an options page to manage the settings.

Check-Mail-SMTP vs ElasticEmail Plugin