Daev.tech

Unified aims to provide standard functionality that almost all sites use or should use, such as page caching, clean responses, custom SMTP and good security.
Our current features:
<ul>
<li>Email log
<ul>
<li>Searchable list of email sent from the site, where emails content can be viewed, re-send and more.</li>
</ul>
</li>
<li>Email Queue
<ul>
<li>Never make the user wait for emails being sent by the system again, where it might fail</li>
<li>Queue emails and send the emails in the background instead, with support for retrying when mails cant be sent.</li>
</ul>
</li>
<li>Page caching
<ul>
<li>Very fast page caching – Just enable and we take care of the rest</li>
<li>WooCommerce support</li>
</ul>
</li>
<li>SMTP setup
<ul>
<li>Configure a custom SMTP server to send your emails through</li>
</ul>
</li>
<li>Clean-up
<ul>
<li>Clean up the response generated by WordPress</li>
</ul>
</li>
<li>Security
<ul>
<li>Configure security headers to make your site more safe</li>
<li>Enable header X-Frame-Options</li>
<li>Enable header X-Content-Type-Options</li>
<li>Enable header Referrer-Policy</li>
<li>Enable header Strict-Transport-Security (HSTS)</li>
</ul>
</li>
</ul>
Our goal is to make the functionality simple, with high performance and low memory footprint, over the cost, which is that it can not support all the same features as the specialized plugins.
But the argument here is that simplicity, high performance, low memory usage and easy setup is more important than frontend users gets served 10ms faster with the bloated specialized plugins.
Having specialized plugins for common functional needs could seem like a good idea, but they are often over-engineered and bloated. 
Each plugin often has its own libraries loaded, configurations, files and more to make it work.
So you have to configure them in different places and they may not even work well together.
Also, having many plugins, tend to make to the admin section (/wp-admin) very slow, as it often loads the entire world in all plugins, each of them checking their licenses etc.
What if Unified doesnt support feature X that I need?
Unified does not intend to be the plugin with all functionality, but only the have the basics with high performance. 
But we would appreciate your input, if you feel like something is missing. Please contact <a href="mailto:support@daev.tech" rel="nofollow ugc">support@daev.tech</a> for the details.
As example, if you need another SMTP plugin with a certain feature set, you can just install that and disable it in Unified. 
When you disable features in Unified, you really disable it, so that it no longer loads anything.
<h3>Plan for Unified</h3>
We have great plans for Unified and many features planned already.
Our ultimate vision for Unified, is that our users use Unified as a base plugin on their sites, to cover most of the standard functionality that most sites use.

Unified – Email Log, Email Queue, Page cache and more

Unified is a plugin that combines functionalities that most sites use, all in one plugin, with a sharp focus on high performance and low memory usage.

Milan Dinić

<a href="https://milandinic.com/wordpress/plugins/simple-email-queue/" rel="nofollow ugc">Plugin homepage</a> | <a href="https://milandinic.com/" rel="nofollow ugc">Plugin author</a> | <a href="https://shop.milandinic.com/downloads/simple-email-queue-plus/" rel="nofollow ugc">Plus Version</a>
Simple Email Queue is a WordPress plugin that is used to pass restrictions set by your host on number of sent emails in given period.
This basic free version is only useful for developers that can extend it and use it in their code. If you want to use it in full capacity, consider getting <a href="https://shop.milandinic.com/downloads/simple-email-queue-plus/" rel="nofollow ugc">plus version</a>.
<h3>Usage</h3>
First, you need to set what is maximum number of emails that can be sent in a given period. By default, it sends 10 emails in 6 minutes. This means that if you want to send 15 emails in 6 minutes, only 10 emails are sent while rest 5 emails are put in queue and sent in the next period, after 6th minute has passed.
You can change this limits by using filters from you code. Filter <code>simple_email_queue_max</code> is used to set maximum number of emails that are sent in period. It expects positive integer to be passed.
To change period length, you can use filter <code>simple_email_queue_interval</code>. It also expects positive integer to be passed but please take care that this number is of seconds, not minutes (for example, if your period is 30 minutes, you would pass <code>1800</code>).
Different hosts use different limits. Please consult your host’s documentation or support to find this out.
If you want user interface in your admin area, use <a href="https://shop.milandinic.com/downloads/simple-email-queue-plus/" rel="nofollow ugc">plus version</a>.
To use this limits, you need to use function <code>simple_email_queue_add()</code> instead of built-in function <code>wp_mail()</code>. Both accept same parameters. 
Emails that are sent using <code>wp_mail()</code> function are not sent using queue and are not counted for limits. If you want that all emails are sent using queue, even those sent using <code>wp_mail()</code> function, use <a href="https://shop.milandinic.com/downloads/simple-email-queue-plus/" rel="nofollow ugc">plus version</a>.
And it’s on <a href="https://github.com/dimadin/simple-email-queue" rel="nofollow ugc">GitHub</a>.

Simple Email Queue

Put email in queue and send it one by one, by limits.

Unified – Email Log, Email Queue, Page cache and more vs Simple Email Queue