MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

Share of active installs on each version of this plugin · 69% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

Refined from the date this plugin crossed into its current band.

No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price. A small install base leaves thin data to model from. The recent download trend is too spiky to read.

13 of the last 21 four- and five-star reviews came from accounts created within a month of posting the review.

Registering a wp.org account just to leave a review is common and often entirely legitimate. The share here is unusually high for the sample, so it's worth keeping in mind while reading the reviews.

1. ★★★★★ subimal

   4.7y ago

   Excellent plugin & I am satisfied. Moreover, the support is prompt & too good. Very helpful in solving my problems. Thanks

   Read on wp.org ↗
2. ★★★★★ willpower1

   5.1y ago

   How can I set the MailChimp pop up so that it doesn’t appear again after being closed for the first time? Thanks

   Read on wp.org ↗
3. ★★★★★ saineelagiri

   5.3y ago

   i am using this plugin everything fine but when i am going to change or edit the text it is not updating

   Read on wp.org ↗
4. ★★★★★ warrickvdh

   5.8y ago

   The support was awesome.

   Read on wp.org ↗
5. ★★★★★ yaseerch

   5.9y ago

   What a useless thing developed. I have installed this plugin and create the form and the main purpose that is even showing in the plugin name “Mailchimp” Integration you need to buy its PRO version. Waste of time and it must be at least this feature to be included in the FREE version. Bad experience at all. Not recommended this plugin. This topic was modified 5 years, 9 months ago by yaseerch.

   Read on wp.org ↗
6. ★★★★★ sandrohaag

   6.0y ago

   Thanks for your fast support Joshua!

   Read on wp.org ↗
7. ★★★★★ mr108

   6.1y ago

   Just tried to use it and create a Contact form. It has been the most chaotic most headache creating experience.

   Read on wp.org ↗
8. ★★★★★ sergiobcn

   6.1y ago

   You know there is a real team behind the plugin when you get soon reply to your questions and right away solutions. Thank you Joshua 🙂

   Read on wp.org ↗

7 disclosed vulnerabilities on record for this plugin, all fixed in the current version. Sites on older versions stay exposed until they update.

1. High · 7.2 MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder <= 4.3.3 - Unauthenticated Stored Cross-Site Scripting ↗
   2026-08-11 CVE-2026-27536 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 4.3.3 Patched in 4.3.4
2. High · 7.2 MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder <= 4.3.3 - Unauthenticated Stored Cross-Site Scripting via Form Field Values ↗
   2026-07-31 CVE-2026-15052 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 4.3.3 Patched in 4.3.4
3. Medium · 6.4 MailChimp Subscribe Forms <= 4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting ↗
   2025-01-15 CVE-2025-22727 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 4.1 Patched in 4.2
4. Medium · 4.4 MailChimp Subscribe Forms <= 4.0.9.7 - Authenticated (Editor+) Stored Cross-Site Scripting ↗
   2024-08-09 CVE-2024-43211 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 4.0.9.7 Patched in 4.0.9.8
5. Medium · 4.4 MailChimp Subscribe Forms <= 4.0.9.1 - Authenticated (Administrator+) Stored Cross-Site Scripting ↗
   2023-05-22 CVE-2023-33328 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 4.0.9.1 Patched in 4.0.9.2
6. Medium · 6.1 MailChimp Subscribe Forms <= 4.0.9.3 - Open Redirect ↗
   2023-05-10 CVE-2023-32517 URL Redirection to Untrusted Site ('Open Redirect') Affects <= 4.0.9.3 Patched in 4.0.9.4
7. High · 8.8 MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder < 1.2 - Remote Code Execution ↗
   2015-04-21 Improper Control of Generation of Code ('Code Injection') Affects < 1.2 Patched in 1.2

Automated install-time checks, tested on PHP 8.1.12 · WP 6.8.3

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

1. 2026-03-28 3K+ → 2K+ down after 4 days in tier
2. 2026-03-24 2K+ → 3K+ up after 1 days in tier
3. 2026-03-23 3K+ → 2K+ down after 425 days in tier
4. 2025-01-22 4K+ → 3K+ down after 5 days in tier
5. 2025-01-17 3K+ → 4K+ up after 3 days in tier
6. 2025-01-14 4K+ → 3K+ down after 1 days in tier
7. 2025-01-13 3K+ → 4K+ up after 1 days in tier
8. 2025-01-12 4K+ → 3K+ down after 2 days in tier

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

• Klaviyo 100K+ installs · 3.2★ · 2 shared tags B
• Mailchimp List Subscribe Form 60K+ installs · 2.8★ · 2 shared tags B
• Contact Form & SMTP Plugin for WordPress by PirateForms 30K+ installs · 4.7★ · 2 shared tags C
• Gravity PDF 20K+ installs · 4.9★ · 2 shared tags B
• Website Pop-up Builder by BDOW! (formerly Sumo): Pop-ups + forms for email opt-ins and lead generation 10K+ installs · 4.2★ · 2 shared tags C
• Mailjet Email Marketing 10K+ installs · 3.3★ · 2 shared tags B

Embed this report card

Drop a live Pulse card for MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder into a readme, a review or a deck. It updates itself.

MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder: 2K+ active installs, 4.0★ (65 reviews). Plugin Pulse (WP Mayor), as of 2026-08-29. https://plugins.wpmayor.com/plugin/mailchimp-subscribe-sm