by Matt Miller 5 (11 reviews)

Send Emails with Mandrill

Name: Send Emails with Mandrill
Rating: 5.0 (11 reviews)
Author: Matt Miller

'Send Emails with Mandrill' sends emails that are generated by WordPress through Mandrill, a transactional email service powered by MailChimp.

Send Emails with Mandrill ranks #2,820 among WordPress.org plugins with 6,000+ active installations, is #166 of 3,349 in the Communication category, a 5/5 rating from 11 reviews, and was last updated Feb 17, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Tested up to WP 6.9.7 (Current: 7.1)

v1.6.2 Current Version v1.6.2

Updated 6 months ago Last Update on 17 Feb, 2026

Refreshed 8 hours ago Last Refreshed on

#166 of 3,349 in Communication Top 5% by installs Downloads -24.3% this week

View on WordPress.org

Rank

#2,820

— No change

Active Installs

6K+

-10.8%

KW Avg Position

57.2

— No change

Downloads

262.9K

+53 today

Support Resolved

— No change

Rating

100%

Review 5 out of 5

5 (11 reviews)

Next Milestone 7K

Total Progress 70.7%

6K+ 7K+

104

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Rank Changes

Current #2,820

Change

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

5.0

11 reviews

Overall 100%

11 (100%)

0 (0%)

Security History

Source: WPVulnerability

1 known vulnerability on record · 0 in the last 24 months · checked 2 days ago

Aug 9, 2024

Send Emails with Mandrill [send-emails-with-mandrill] < 1.4.2

CVE-2024-43208 · Fixed in v1.4.2

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Plugin Details

Version: 1.6.2
Last Updated: Feb 17, 2026
Requires WP: 3.0+
Tested Up To: 6.9.7
PHP Version: 8.1 or higher
Author: Matt Miller

Support & Rating

Rating: ★ ★ ★ ★ ★ 5
Reviews: 11
Support Threads: 0
Resolved: 0%

Keywords

email mailchimp mandrill smtp wp_mail

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who want to send transactional emails through Mandrill instead of the default mail system. It replaces the wp_mail function with Mandrill's API, adding email tracking, tagging, and template support.

Replaces wp_mail function
Sends emails with attachments
Automatic email tagging for statistics
Custom tags per email
Mandrill Dashboard tracking
MailChimp template support
mandrill_payload filter hook
wpMandrill::mail function for plugins

Frequently Asked Questions

Common questions about Send Emails with Mandrill

In order to use this plugin, you have to provide one of your Mandrill API keys. That's currently the only way we can get access to your Mandrill account.

Yes. If you aren't currently on a MailChimp Monthly Plan, you'll first need to upgrade or switch to a Monthly Plan. Once you have upgraded you can follow the steps here to add Mandrill to your account.

Yes. We try to send every single email sent through your WordPress installation. We also try to process your headers and attachments. If the sending fails for any reason, the plugin will try to send it again using the WordPress wp_mail function.

Use the mandrill_payload filter and add a new parameter called 'force_native' to the $message variable, and set it to true: $message['force_native'] = true; My emails are broken and show weird CSS code In version 1.09, we added a setting that allows you to tell the plugin if you want to replace your line feeds by . Try playing with that switch. If it works for certain emails but doesn't work for others, you might want to modify this setting using the mandrill_nl2br filter. For example, if you don't want to use this filter for the "forgot password" emails, add something like this to your theme's functions.php file: function my_function($nl2br, $message) { if ( in_array('wp_retrieve_password', $message['tags']['automatic']) ) { $nl2br = false; } return $nl2br; } add_filter('mandrill_nl2br', 'my_function');

If we couldn't send your email through Mandrill, we'll try to leave the Mandrill response in your server's log so that's your first stop. Additionally, if you set the WP_DEBUG constant (defined in your wp-config.php file) to true, you'll see some messages added by the plugin in key parts of the process. I am getting an Invalid API Key message and I'm sure my API is valid! Please verify the following: That your API key is active (this can be viewed on the SMTP & API Credentials page in your Mandrill account); That your web server has either cURL installed or is able to use fsock*() functions (if you don't know what this means, you may want to check with your hosting provider for more details); That the domain name you're using above is listed in the Sending Domains for your Mandrill account.

Yes. Add define('SEWM_API_KEY', 'your-api-key-here'); to your wp-config.php file. This is useful for keeping credentials out of the database or managing them across environments.

The plugin automatically falls back to the native WordPress wp_mail() function, so your emails still get delivered.

The plugin requires PHP 8.1 or higher and has been tested up to WordPress 6.9.1.

The plugin is available in 30 languages with more being added regularly. We are working toward supporting 50 languages total!