Mako

This plugin sends XMPP notifications to the users who are registered and set their own Jabber ID. Emails to them are able to be suppressed.
This plugin provides a function to be added ‘wp_mail’ hook in <code>wp_mail()</code> located in <code>wp-includes/pluggable.php</code>.
This plugin requires <a href="https://wordpress.org/plugins/xmpp-enabled/" rel="ugc">XMPP Enabled</a> plugin.
<h4>Filter Hook</h4>
The function <code>xmpp_sender()</code> in this plugin has two filter hooks.
Using ‘abort_xmpp_sender’ hook allow abort all processing. For example, you want to send email independent of user or JID when the subject has a particular keyword. You may add a function which checks the subject and returns <code>true</code> if keyword is found.
Using ’email_to_jid’ hook allow set/unset JID correspond to email address. Default function of this hook, <code>email2jid()</code> returns JID when the user is registered to the site and his/her JID is set. If you want to send email but XMPP to a particular user, add a function which returns <code>false</code>.

wp_mail to XMPP

Send almost all notifications via XMPP instead of email

Jooky

Send newsletters (emails) with wordpress and SMTP 
Mass mailing and template import.
Functionality of the plugin :
Languages : fr_FR, en_US, it_IT, pt_PT, de_DE, es_ES, fr_CA, fr_CH, fr_BE, en_AU, en_CA, en_GB
Managing contacts (emails)
<ul>
<li>
Creating mailing lists Unlimited
</li>
<li>
Unlimited numbers of recipients
</li>
<li>
Creating mailing lists with parameterizable fields
</li>
<li>
Import recipients (email)
</li>
<li>
Change recipients (email)
</li>
<li>
Unsubscribe automatic subscribers (email)
</li>
<li>
Export recipients (email) txt, csv or excel file
</li>
<li>
Changing subscriber lists
</li>
<li>
Removing subscriber lists
</li>
<li>
Export statistic (open, clic, hard bounces) csv or excel file
</li>
</ul>
Template for newsletter
<ul>
<li>
Import template newsletters zip and automatic installation
</li>
<li>
See template of newsletters in an iframe on the editor
</li>
<li>
Button to copy a template automatically in the newsletter editor
</li>
<li>
Editing and deleting templates newsletters
</li>
</ul>
Newsletter
<ul>
<li>
Creation from models previewing newsletters
</li>
<li>
Variables (shortcode) Automatic possible on your list, so lets add fields like name and first name automatically in your newsletter.
</li>
<li>
Rewriting links (rewritting) Automatic (on activation of the Free API)
</li>
<li>
Editing and deleting newsletters
</li>
</ul>
UNSUBSCRIBE link and link of the newsletter online
<ul>
<li>
Removing subscriber lists
</li>
<li>
Link for viewing the newsletter online
</li>
</ul>
Articles and pages
<ul>
<li>
Editing and deleting newsletters
</li>
<li>
Integrated model for new links, but changed
</li>
</ul>
Send newsletter
<ul>
<li>
Programming the possible date of shipment
</li>
<li>
Additional tracking can
</li>
<li>
Script for multi-server sending email (on activation of the API commercial)
</li>
<li>
Ability to pause or stop the campaign
</li>
<li>
Followed by the online campaign
</li>
</ul>
SMTP setting
<ul>
<li>
Works with all SMTP (gmail) servers
</li>
<li>
Automatic configuration with our SMTP servers
</li>
</ul>
Management NPAI
<ul>
<li>
Optional management bounces can automatically remove invalid email (on activation of the API commercial)
</li>
<li>
View a glance antispam messages or other (on activation of the API commercial)
</li>
</ul>
Management blacklist
<ul>
<li>
Optional management blacklists monitors your or your SMTP server and in case you are on a list you provide the link to unsubscribe (on activation of the API commercial)
</li>
<li>
SpamScore (note notoriety your mailing) important for hotmail updated every 4 hours. (on activation of the API commercial)
</li>
</ul>
Statistic
<ul>
<li>
Statistics sending, email waiting
</li>
<li>
Statistics openings, clicks, unsubscribes by ISP (on activation of the Free API)
</li>
<li>
Statistics openings, clicks, unsubscribes, by country (on activation of the Free API)
</li>
<li>
Statistics openings, clicks Unsubscribe by sending (on activation of the Free API)
</li>
<li>
Statistics openings, clicks, unsubscribes, by tracking (on activation of the Free API)
</li>
<li>
Statistics openings, clicks, unsubscribes, per server (on activation of the Free API)
</li>
<li>
Graphic widget on the dashboard for clicks, smtp, status (on activation of the Free API)
</li>
<li>
SMTP statistics if you have an SMTP server with us (on activation of the API commercial)
</li>
</ul>
Widget
<ul>
<li>Subscribe to your recipient list parametrable</li>
</ul>
Alerts
<ul>
<li>
management of configurable alerts
</li>
<li>
Sending alert newsletter
</li>
<li>
Alert newsletter finished
</li>
<li>
registration alert
</li>
<li>
SMTP alert status (on activation of the Free API)
</li>
<li>
blacklist alert (on activation of the Free API)
</li>
<li>
daily Report (on activation of the Free API)
</li>
</ul>
Faq and support
<ul>
<li>
Access to the FAQ and support integrated plugin (on activation of the Free API)
</li>
<li>
http://www.e-mailing-service.net
</li>
</ul>
Contact form
<ul>
<li>
Add contact form shortcode
</li>
<li>
List message in database
</li>
</ul>
Free API
You are not forced to activate the free API to send emails and manage your recipients.
But to get more detailed statistics without using memory and mysql resource of your wordpress, it will activate the free API.
For this we will be informed of the url and the ip of your website. But we have no access to your confidential data and not access your email list.
To enable the API, you need to click to go to options and services, choose a nickname and put your email and activation is immediate.
You can also delete the account of the Free API
<h4>Import template video.</h4>
<iframe loading="lazy" title="Import template newsletter" width="750" height="422" src="https://www.youtube.com/embed/8SbD1YGmAig?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
<h3>Arbitrary section</h3>

e-mailing service

Full plugin management and sending newsletter.The plugin also sending links your new articles and new pages to your subscribers.

wp_mail to XMPP vs e-mailing service