MagicWP.io

Magic API Email replaces the default WordPress email system (<code>wp_mail()</code>) with a direct API connection to your chosen transactional email provider. No SMTP configuration needed — just paste your API key and you’re ready to go.
Supported Providers:
<ul>
<li><a href="https://resend.com" rel="nofollow ugc">Resend</a> — Modern email API for developers</li>
<li><a href="https://mailgun.com" rel="nofollow ugc">Mailgun</a> — Reliable transactional email</li>
<li><a href="https://postmarkapp.com" rel="nofollow ugc">Postmark</a> — Fast, deliverable transactional email</li>
<li><a href="https://mailtrap.io" rel="nofollow ugc">Mailtrap</a> — Email delivery platform with sandbox testing</li>
<li><a href="https://useplunk.com" rel="nofollow ugc">Plunk</a> — Email API for developers</li>
</ul>
Features:
<ul>
<li>Per-provider settings — API key, From Email, and From Name are stored independently for each provider. Switching providers never overwrites another provider’s credentials.</li>
<li>Test email — Send a test email directly from the settings page to verify your configuration.</li>
<li>Secure — All inputs are sanitized and validated. API keys are stored as password fields.</li>
<li>Lightweight — No dependencies, no bloat. Three focused class files.</li>
<li>Developer-friendly — Falls back to default <code>wp_mail()</code> if no API key is configured.</li>
</ul>
<h3>External services</h3>
This plugin acts as a bridge between your WordPress site and your chosen transactional email provider. By design, instead of sending emails via standard <code>wp_mail()</code>, this plugin sends the content of your outgoing emails via an HTTPS API request to the provider you select in the settings.
Depending on your configuration, the plugin connects to one of the following APIs: 
* Resend (api.resend.com) – <a href="https://resend.com/terms" rel="nofollow ugc">Terms of Service</a> | <a href="https://resend.com/privacy" rel="nofollow ugc">Privacy Policy</a> 
* Mailgun (api.mailgun.net) – <a href="https://www.mailgun.com/terms" rel="nofollow ugc">Terms of Service</a> | <a href="https://www.mailgun.com/privacy" rel="nofollow ugc">Privacy Policy</a> 
* Postmark (api.postmarkapp.com) – <a href="https://postmarkapp.com/terms-of-service" rel="nofollow ugc">Terms of Service</a> | <a href="https://postmarkapp.com/privacy-policy" rel="nofollow ugc">Privacy Policy</a> 
* Mailtrap (api.mailtrap.io) – <a href="https://mailtrap.io/terms" rel="nofollow ugc">Terms of Service</a> | <a href="https://mailtrap.io/privacy-policy" rel="nofollow ugc">Privacy Policy</a> 
* Plunk (api.useplunk.com) – <a href="https://useplunk.com/terms" rel="nofollow ugc">Terms of Service</a> | <a href="https://useplunk.com/privacy" rel="nofollow ugc">Privacy Policy</a>
What data is sent and when? 
When any plugin or WordPress core feature attempts to send an email (e.g. password resets, contact form submissions, order confirmations), the data (including the recipient’s email address, sender information, email subject, and email body content) is transmitted securely to your configured provider in order to deliver the email. No data is sent if you have not configured an API key for a provider.

Magic API Email

Send WordPress emails through a transactional API provider: Resend, Mailgun, Postmark, or Mailtrap. No SMTP needed.

Gagan Deep Singh

guillaumemolter

livearoha

This plugin enables WordPress blogs of any size to deliver and track WordPress notification emails reliably, with minimal setup time and zero maintenance. No more SMTP errors or delivery problems with Postmark!
If you don’t already have a free Postmark account, you can get one in minutes. Every account comes with thousands of free email sends.
PLEASE NOTE: This is not official PostMarkApp Plugin. This plugin is a copy of the Official Postmarkapp plugin which had several critical bugs. The Official Plugin developers have not addressed these bugs for some time now, so I created a new plugin to solve those issues.
Issues fixed(from the official version):
<ul>
<li>Fixed the Connection Timeout bug</li>
<li>Fixed the Fatal Error due to incorrect usage of WP_Error object</li>
<li>Fixed the issue while parsing the headers sent as array to the wp_mail function</li>
<li>Fixed the breaking of plaintext when force html option is selected</li>
</ul>
New Features added:
<ul>
<li>Support for adding Cc, Bcc, and Reply-To headers</li>
<li>Support to filter the arguments by other plugins like its done in the actual wp_mail() function of WordPress</li>
<li>Auto import settings from the Postmarkapp approved WordPress plugin for easy migration</li>
</ul>
Roadmap:
<ul>
<li>Support for attachments</li>
<li>Handling special characters in Subject</li>
<li>Ability for dynamic “From” addresses by verifying from PostmarkApp</li>
</ul>
To know more about PostMarkApp, please visit this link: http://postmarkapp.com
To get help about PostMarkApp, please visit this link: http://support.postmarkapp.com/
To contribute to this plugin, visit the GitHub repository: https://github.com/gagan0123/postmarkapp-email-integrator

PostmarkApp Email Integrator

Enables your WordPress site to send emails via PostMarkApp API.

Magic API Email vs PostmarkApp Email Integrator