Julien Desrosiers

Pressmail

The simplest way to send emails from your WordPress site. No SMTP or DNS to manage.
Note: to use this plugin, you will need to first create an account on <a href="https://www.pressmail.co" rel="nofollow ugc">pressmail.co</a>. See our <a href="https://www.pressmail.co/terms-of-service/" rel="nofollow ugc">terms of service</a>.
How it works:
<ol>
<li>Get your API key</li>
<li>Install this plugin</li>
<li>Let us handle the rest</li>
</ol>

The easiest way to send emails with WordPress

rajuru

SparkPost

The <a href="https://www.sparkpost.com/" rel="nofollow ugc">SparkPost</a> email delivery service offers best in class deliverability to ensure your mail hits the inbox, live analytics to review, track and optimize your email activities, as well as highest performance when you need it most: always.
When the SparkPost plugin is enabled, all outgoing email from your WordPress installation is sent through your SparkPost service. From within <a href="https://app.sparkpost.com/" rel="nofollow ugc">the SparkPost UI</a> or <a href="https://app.eu.sparkpost.com/" rel="nofollow ugc">SparkPost EU UI</a>, you can then watch your campaigns unfold live by tracking your engagement metrics, learn what your audience responds to and even integrate more deeply with your app using the SparkPost API.
Requirements 
– PHP 7.0 or later 
– WordPress 5.5 or later

Send all your email from WordPress through SparkPost, the most advanced email delivery service.

Pressmail vs SparkPost