andreyberestov

Berestov Element Scheduler replaces the inner HTML of selected frontend elements by schedule.
It can match a parent element by class or ID and replace everything inside that parent with the value you define.
Supported schedule groups:
<ul>
<li>Weekdays</li>
<li>Odd and even month days</li>
<li>Odd and even ISO weeks</li>
<li>Persistent replacement</li>
</ul>
Features:
<ul>
<li>Unlimited rules</li>
<li>Search by class or ID</li>
<li>Class mode works across all matched elements</li>
<li>Multiple different rules per schedule slot</li>
<li>Duplicate prevention inside the same slot</li>
<li>Server-side, JavaScript, or Auto replacement mode</li>
<li>UTC offset based switching</li>
<li>Drag and drop schedule UI</li>
<li>Translation-ready admin UI</li>
</ul>
Use cases:
<ul>
<li>Rotate phone numbers</li>
<li>Schedule banners</li>
<li>Switch promo blocks</li>
<li>Replace HTML snippets by schedule</li>
</ul>
Days without a rule stay unchanged.
Security
<ul>
<li>Capability checks and nonce validation for all administrative actions.</li>
<li>Strict sanitization and option whitelisting for all saved settings.</li>
<li>Only explicitly allowed configuration fields are accepted.</li>
<li>HTML output follows WordPress capability rules (unfiltered_html).</li>
<li>No external requests or file operations performed by the plugin.</li>
</ul>

Berestov Element Scheduler

Schedule frontend element replacements by day, parity, or persistent rules.

tmertz

This plugin replaces wp_mail with a custom function that utilizes PostMarkApp.com to send email to your users. 
There really isn’t much more to say about the plugin.
<h4>REQUIRED</h4>
<ul>
<li>PHP5</li>
<li>cURL for PHP5</li>
</ul>

PostMarkApp Mail Replacement

A simple plugin that replaces the default wp_mail function with PostMarkApp (http://postmarkapp.com/).

Berestov Element Scheduler vs PostMarkApp Mail Replacement