by fatcatapps 4.4 (77 reviews)

Forms for Mailchimp by Optin Cat - Grow Your MailChimp List

Name: Forms for Mailchimp by Optin Cat - Grow Your MailChimp List
Rating: 4.4 (77 reviews)
Author: fatcatapps

Forms for Mailchimp by Optin Cat helps you grow your MailChimp list. Create popups, inline forms, sidebar widgets & more.

Forms for Mailchimp by Optin Cat ranks #4,698 among WordPress.org plugins with 2,000+ active installations, is #228 of 3,352 in the Communication category, a 4.4/5 rating from 77 reviews, and was last updated Aug 16, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1

vtrunk Current Version vtrunk

Updated 1 month ago Last Update on 16 Aug, 2026

Refreshed 7 hours ago Last Refreshed on

#228 of 3,352 in Communication Top 10% by installs

View on WordPress.org

Rank

#4,698

-1 this week

Active Installs

2K+

-30.7%

KW Avg Position

12.4

— No change

Downloads

276K

+13 today

Support Resolved

— No change

Rating

88%

Review 4.4 out of 5

4.4 (77 reviews)

Next Milestone 3K

Total Progress 88.5%

2K+ 3K+

453

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Need 115 more installs to reach 3K+

Rank Changes

Current #4,698

Change

Best #

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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

4.4

77 reviews

Overall 88%

62 (81%)

1 (1%)

4 (5%)

2 (3%)

8 (10%)

Security History

Source: WPVulnerability

3 known vulnerabilities on record · 2 in the last 24 months · checked 1 month ago

Oct 25, 2024

Forms for Mailchimp by Optin Cat – Grow Your MailChimp List [mailchimp-wp] < 2.5.8

CVE-2024-8870 · Fixed in v2.5.8
Oct 11, 2024

Forms for Mailchimp by Optin Cat – Grow Your MailChimp List [mailchimp-wp] < 2.5.8

CVE-2024-7489 · Fixed in v2.5.8
Nov 7, 2023

Forms for Mailchimp by Optin Cat – Grow Your MailChimp List [mailchimp-wp] < 2.5.5

CVE-2023-47545 · Fixed in v2.5.5

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Plugin Details

Version: trunk
Last Updated: Aug 16, 2026
Requires WP: 3.9.1+
Tested Up To: 7.1
PHP Version: N/A
Author: fatcatapps

Support & Rating

Rating: ★ ★ ★ ★ ☆ 4.4
Reviews: 77
Support Threads: 0
Resolved: 0%

Keywords

MailChimp form mailchimp mailchimp block mailchimp widget mailchimp wordpress

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners, bloggers, marketers, and small business owners who use MailChimp for email marketing. It solves the problem of building and displaying MailChimp signup forms (popups, post boxes, sidebar widgets) on a WordPress site to grow a mailing list.

Gutenberg block support
MailChimp post boxes
MailChimp sidebar widgets
MailChimp lightbox pop-ups
Unlimited forms
Responsive design
Shortcode support
Analytics on form performance

Frequently Asked Questions

Common questions about Forms for Mailchimp by Optin Cat - Grow Your MailChimp List

Yes, you need a MailChimp account. You can sign up for a free MailChimp account here.

Yes, you'll need to set up at least one MailChimp list.

Go to your Dashboard -> Optin Cat -> Add New or Select your previously created form. To integrate your MailChimp form with your MailChimp account please follow the steps below. Go to your Dashboard -> Optin Cat -> Add New or select a previously created MailChimp form. Go to Email Marketing Provider section -> enter your MailChimp API key. Enter your MailChimp API key in to the field. If you entered the correct MailChimp API key, a green checkmark will appear. Otherwise, a red error sign will appear. If this is the case, please double check your MailChimp API key. A dropdown will now appear. Select your MailChimp List that you would want your MailChimp form to populate.

You can find your MailChimp API key here.

After entering the correct MailChimp API key a dropdown containing all of your MailChimp lists will appear. Select the MailChimp list of your choice there.

This feature is only part of the premium version of this plugin. For more information, click here.

Keep in mind that MailChimp will send a confirmation email before adding subscribers to your MailChimp list. This email could be delayed by a couple of minutes or end up in your spam folder. If you're sure that subscribers aren't added to MailChimp, please check with your host if they have PHP CURL installed and if they allow requests to https://api.mailchimp.com/.

Not at this time. We might add support for MailChimp groups in the future if there's popuplar demand for it. If you'd like to see this feature, please leave a comment in the suppport forum.

You can add MailChimp optin forms to your site by going to Optin Cat -> Add New. First you'll have to choose a MailChimp form type - sidebar widget, post box (goes inside of a WordPress post or page), or lightbox popup. Then choose a layout and modify the text, colors and design using the point & click editor. Afterwards, connect the from to the MailChimp API and select a Thank You page. Finally, publish your MailChimp form. This varies based on the MailChimp form type - instructions can be found in the user interface.

If your blog has a sidebar (like most blogs), you should definitely set up a MailChimp form and place it at the top of your sidebar. This is a quick & easy win. Adding a MailChimp post box to the bottom of your blog posts is highly recommended. Readers are highly engaged after reading a post and will be more likely to opt in. For extra effectiveness, you could set up individual MailChimp forms with unique call to actions & text for each category. This will result in even more MailChimp subscribers. The most effective way to grow your list is our MailChimp popup. This MailChimp form is a lot more agressive than sidebar widgets & post boxes so it should be used with care. The premium version of this plugin comes with some advanced settings that let you fine-tune the popup further so you can maximize conversions while not annoying your users. To recap, the most effective & aggressive MailChimp form is the popup. The MailChimp post box will get you less conversions, but it's a lot more subtle. Finally, the MailChimp sidebar widget will most likely get you the least conversions. Nonetheless, it's worth setting up since it's a quick and easy win.