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Mailchimp List Subscribe Form

By Mailchimp

Marketing & Advertising / Email Marketing & Campaigns

Reviewed by Omar Dabbas

Trusted WordPress expert with 20+ years of experience evaluating plugins for the WP ecosystem.

Mailchimp List Subscribe Form Review - In-Depth Analysis

Quickly add a Mailchimp signup form to your WordPress site using a block, widget, or shortcode.

Performance Overview

WPS Score

7.28/10

User Rating

2.6/5 (based on 77+ reviews)

Active Installations

60,000+

Update Frequency

Average It is calculated using the weighted average of same category plugins.

Security Score

5 / 10 (Medium Risk) It is calculated using the weighted average of all versions.

What It Does

Use the Mailchimp List Subscribe plugin to quickly add a Mailchimp signup form block, widget, or shortcode to your WordPress site.

After installation, if you already have a Mailchimp account, you will log in with that account and then proceed to configure settings.

If you do not have an account, you can create one directly in the plugin. After entering in all your personal details, you will need to activate your account via an email that will be sent to you. Once done, you will proceed to configure settings.

On the settings screen, you will select your Mailchimp list, choose merge fields and groups, and configure other options. Once done, you can now add the block, widget, or shortcode to your site. Typically, installation and setup will take about 5-10 minutes, and absolutely everything can be done via the WordPress Setting GUI, with no file editing at all.

WordPress.com compatibility is limited to Business tier users only.

Starting in version 1.6.0, authentication has changed to use OAuth. As part of this process, we retrieve an access token that can be used to make API requests. To provide a high level of security, this access token is encrypted before being stored in the WordPress database.

To prevent issues with access token decryption, it is recommended to define two additional constants in your site's wp-config.php file. These constants should consist of a combination of characters, preferably at least 32 characters long.

If you are upgrading to version 1.2.1 and you used the widget in your sidebar previously, all you need to do is drag the Mailchimp Widget back into the sidebar, visit the Mailchimp settings page, and click the 'Update List' button to complete the process.

Comparing to Alternatives

Mailchimp List Subscribe Form faces stiff competition from several well-established newsletter and email marketing plugins that offer more features and better support.

Top alternatives

Strengths

Direct integration with Mailchimp service
Simple setup for basic subscription forms
Lightweight plugin with minimal bloat
Free to use with no paid version required

Weaknesses

Lacks advanced customization options
Outdated interface and poor user experience
Reported issues with spam profiles
Limited support and infrequent updates

User Sentiment Analysis

User reviews are mixed but lean heavily towards dissatisfaction, with over half of ratings at 1 or 2 stars, reflecting significant user frustration.

Positive highlights

"Great support and very happy" - Cognisant_2000
"Fixed issues with orders of fields promptly" - Cognisant_2000
"Simple integration for basic needs" (implied from some 4-star reviews)

Common complaints

Plugin does not effectively integrate Mailchimp into WordPress sites
No visible output in sidebars and lacks instructions
Plugin appears abandoned with no recent maintenance
Poor implementation injecting problematic JavaScript
Spam profiles appearing in mailing lists after updates

Weaknesses

Security vulnerability fixed only in recent update
Plugin considered abandoned by users
User interface and functionality are outdated
Spam management issues

Who Should Use This?

Best for

Users seeking a simple, free Mailchimp subscription form with minimal setup who do not require advanced features or frequent updates.

Not ideal for

Those needing reliable, well-supported, and feature-rich Mailchimp integration or who prioritize security and spam control should consider alternatives.

Pricing & Value

Free version includes

The free version offers basic Mailchimp subscription form functionality without advanced features or customization.

Final Verdict

Mailchimp List Subscribe Form provides a basic, free solution for integrating Mailchimp subscription forms into WordPress but suffers from outdated design, limited functionality, and security concerns. User reviews highlight frustration with poor support and spam issues, making it less suitable for users seeking a robust and reliable plugin.

Given the availability of numerous well-supported alternatives with richer features and better security, this plugin is best suited only for users with minimal needs who can tolerate its shortcomings. Those requiring dependable Mailchimp integration should explore other options.

Other Notable Features

Here are a few other notable features of this free Mailchimp List Subscribe Form plugin.

Mailchimp

Email marketing

Signup form

Screenshots

FAQ

You need to ensure that the fields are enabled both in your Mailchimp account (Audience > Signup forms) and in the settings of this plugin. Once the fields are enabled in both places, then they’ll appear in the editor and frontend of your site.