MailChimp Comment Optin
Note: This plugin is no longer being maintained or supported. Download and use at your own risk.
Consider an alternative
MailChimp Comment Optin shows warning signs in 2026 — compare the alternatives below before installing. It runs on 80+ sites and was last updated 12 years ago, and scores 25/100 on our health check.
- Small user base (80+ active installs)
- Very few reviews so far
- No update in 11 years
- Only tested up to WordPress 4.1 (latest is 7.1)
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where MailChimp Comment Optin stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| >100 | |
| mailchimp | >100 |
| MailChimp form | >100 |
| mailchimp optin | #84 |
| marketing | >100 |
Version adoption
Share of active sites per release.
About MailChimp Comment Optin
From the official readme · v1.2.1Description
Note: This plugin is no longer being maintained or supported. Download and use at your own risk.
Never miss another potential lead again. With this plugin, you now have the ability to add a simple checkbox and message to the end of your comment forms to allow your users to subscribe to a MailChimp list when commenting.
The plugin integrates seamlessly with the MailChimp API to register the name and email of your commenters into an email list of your choosing. By using the double optin method for capturing these email addresses, you can rest assured you are getting the best qualified leads for your growing email list.
This plugin was created by Thomas Griffin. Check out some of my other products, including Soliloquy – the best responsive WordPress slider plugin, Envira Gallery – the best responsive WordPress gallery plugin and OptinMonster.
Installation
- Upload the
mailchimp-comment-optinfolder to the/wp-content/plugins/directory. - Activate the plugin through the ‘Plugins’ menu in WordPress.
- Navigate to
Settings > MC Comment Optin, enter in your MailChimp API key and start customizing.
Changelog
1.2.1
- Compatibility updates for WordPress 4.1.
1.2.0
- Fixed bug that caused emails not to be sent on first comment
- Removed option to optionally choose first name (MailChimp needs the first name regardless)
1.1.1
- Fixed bug with checking for previous subscribers
1.1.0
- Improved styling of options table
- Added option to opt out of checking for previous subscribers (to help with performance on large lists)
- Added button to get an API key if a user didn’t have one ready
1.0.2
- Improved redundancy in checking for subscribers
- Improved changelog
- Added space between checkbox and text for better readability
1.0.1
- Fixed issue listing pending subscription and removed extraneous testing code from plugin
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
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FAQ
MailChimp Comment Optin: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 4, 2026
Is MailChimp Comment Optin free?
Yes. MailChimp Comment Optin is free to download and use from the official WordPress.org plugin directory.
Is MailChimp Comment Optin safe to use in 2026?
MailChimp Comment Optin shows warning signs in 2026 — compare the alternatives below before installing. It runs on 80+ sites and was last updated 12 years ago, and scores 25/100 on our health check.
How many websites use MailChimp Comment Optin?
MailChimp Comment Optin is active on 80+ WordPress websites and has been downloaded 9,988 times since it launched in January 2012. It was downloaded 99 times in the last 30 days.
Does MailChimp Comment Optin work with WordPress 7.1?
MailChimp Comment Optin is officially tested up to WordPress 4.1.42, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
When was MailChimp Comment Optin last updated?
The latest version, 1.2.1, was released on December 27, 2014 (12 years ago).
Who makes MailChimp Comment Optin?
MailChimp Comment Optin is developed and maintained by Thomas Griffin.
What are the best alternatives to MailChimp Comment Optin?
The most popular alternatives to MailChimp Comment Optin are WP Mail SMTP by WPForms (4M+ installs), MC4WP: Mailchimp for WordPr… (1M+ installs) and Easy WP SMTP (500K+ installs).
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