Add Plain-Text Email
Active Installs
100+
Last Updated
June 19, 2026
First Released
October 23, 2013
Download History (Last one month)
Contributors
Add Plain-Text Email
This plugin will add a plain/text version of your HTML emails to your WordPress emails. This decreases the chance of your legit emails being marked as spam by tools as SpamAssassin.
This plugin comes without any settings. When activated, it will automatically look for HTML emails being sent using the wp_mail() function and when necessary add the plain text version.
The source code of this plugin is available on GitHub: ibericode/wp-add-plaintext-email.
About the plugin author
Danny van Kooten has been building WordPress plugins since 2010, starting with WordPress 3.0.
He is the founder of ibericode, the small software company behind popular WordPress plugins including Mailchimp for WordPress and Koko Analytics.
Installing the plugin
- In your WordPress admin panel, go to Plugins > New Plugin, search for Add Plain Text Email and click “Install now”
- Alternatively, download the plugin and upload the contents of
add-plain-text-email.zipto your plugins directory, which usually is/wp-content/plugins/. - Activate the plugin. Your HTML emails will now automatically have a plain text version attached.
- (Optional) Test your new mail score using http://mail-tester.com/
Because it decreases the chance of your legit email being marked as being spam and thus disappearing in spam folders.
http://wiki.apache.org/spamassassin/Rules/MIME_HTML_ONLY
No, the plugin does not affect the HTML message of emails.
No, 99% of all email clients will just show the HTML version of the email.
The other 1% can’t properly display HTML and will show the plain text email. Without this plugin, they would have had nothing to show.
You can use the following online tools to test the spammyness of your WordPress emails.
http://mail-tester.com/
http://isnotspam.com/
http://spamscorechecker.com/
http://www.port25.com/support/authentication-center/email-verification/
Changelog
1.2 – Nov 20, 2023
- Preserve href attribute from
<a>elements. Thanks Benjamin Danon! - Remove
PHPMailerparameter type as it somehow isn’t working on some set-ups…
1.1.3 – Dec 23, 2022
- Remove incorrectly working check to prevent running more than once.
- Update tested WP version.
- Add license information to source code.
1.1.2 – September 1, 2015
Remove faulty debugging statement.
1.1.1 – August 31, 2015
Improvements: The plugin is now a lot smarter when it comes to adding line-breaks.
1.1 – August 24, 2015
- Fixed: WordPress’s “lost password” emails were stripped of links.
- Improvement: Now only running on
text/htmlemails with no text version.
1.0 – October 21, 2013
- Initial release
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