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Serial Number for Contact Form 7

by Nobuntu · Forms

Free audit wp.org ↗

Add-on for Contact Form 7 plugin. Add your own mail-tag to display the serial number.

⚠ Stale⚠ Likely abandoned⚠ Few reviews

How scoring works →

46 Health · D

Maintenance 7/100

Rating quality 74/100

Support 70/100

46 health vs 63 average across 1,679 Forms plugins

2K+

Active installs

≈2.9K estimated

10.8K

Total downloads

since 2022

3.98★

Rating (adjusted)

5.0★ raw · 1 reviews

+41%

191

Downloads · 30d

category median +21%

Removal-risk signals

45/100

Maintenance and integrity signals that tend to precede a WordPress.org removal. Not an official status, a heads-up to act.

Long abandoned. No update in 3+ years — the top precursor to removal once a vulnerability is found.

Directory ranking optimization

How it's scored →

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

49 / 100

Under-optimized

Biggest win: Update recency

Update recency 15/100

WP compatibility 53/100

Rating quality 51/100

Listing tuning 84/100

To rank higher: Last updated 1166 days ago — ship an update; wp.org decays a listing's search weight after ~180 days.

Get the full rank-higher report →

Daily downloads

Since 2022-10-05 · 1,425 days · wp.org + Plugin Pulse archive

+41% vs prior 30d

0 Downloads · Aug 26

0Downloads · Aug 26

30-day downloads

Rolling 30-day volume · peaks are release surges

191

now · peak 1.1K

196 30d downloads · Aug 26

19630d downloads · Aug 26

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

Serial Number for Co · #4576 you DS CF7 Math Captcha · #2142 Popups · #3983 Autocomplete Locatio · #6022

Update activity

How busy the existing users are, measured as downloads in the last 30 days for every 1,000 active sites. A spike means a new release everyone's pulling; a long, slow decline means an aging user base that updates less.

98 per 1k installs · Aug 26

98per 1k installs · Aug 26

Release cadence

No release in a year

from wp.org release tags

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

releases in the last 12 months

3.2y ago

latest release · v2.4.0

tagged releases on record

Recent releases

2.4.0 · 3.2y ago2.3.0 · 3.2y ago2.2.1 · 3.2y ago2.2.0 · 3.2y ago2.1.0 · 3.2y ago2.0.2 · 3.3y ago2.0.1 · 3.3y ago2.0.0 · 3.3y ago1.1.0 · 4.1y ago1.0.0 · 4.1y ago0.1.0 · 4.1y ago

What its installed base runs

via wordpress.org

Share of active installs on each version of this plugin · 98% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

v2.4 98%

v1.1 1.7%

Estimated active installs

The public count shows “2K+”. Our estimate pins where the real number sits.

tracked estimate

2K–3K ≈2.9K

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

Install history · since 2022-10-04 · 1,418 observations

2K Installs · Aug 26

2KInstalls · Aug 26

Estimated value

What this plugin might earn a year, and what it might sell for. Modeled from public signals; we don't see anyone's books.

Est. annual revenue

N/A

Est. acquisition value

N/A

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.

Ratings · 1 reviews

Details

Version: 2.4.0
Last updated: 3.2y ago
Added: 2022-07-13 · 4 yrs old
Requires WP: 6.0
Tested up to: 6.2.11
Requires PHP: 5.6

Changelog ↗Support forum ↗Reviews ↗Advanced stats ↗

Recent reviews

All reviews on wp.org ↗

★★★★★ Peter
3.1y ago

Simple, little plugin but adds great functionality to the CF7 that takes CF7 to a next level…
Read on wp.org ↗

Latest updates

via wp.org changelog

Recent releases and news for this plugin

Behavioral tests

via WP Hive

Automated install-time checks, tested on PHP 8.1.12 · WP 6.2.2

✓ Low memory footprint

✓ Low page-speed impact

✓ Runs on latest PHP + WP

✓ No PHP errors

✓ No JS errors

✓ Activates cleanly

✓ No resource errors

✓ No external HTTP errors

✓ Optimized database use

✕ Frequently updated

Languages

via translate.wordpress.org

Translated into 3 languages, 1 at 90% or more

Japanese 100%

Dutch 83%

Dutch (Belgium) 16%

Growth timeline

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

2024-12-17 1K+ → 2K+ up after 328 days in tier
2024-01-24 900+ → 1K+ up after 46 days in tier
2023-12-09 800+ → 900+ up after 33 days in tier
2023-11-06 700+ → 800+ up after 39 days in tier
2023-09-28 600+ → 700+ up after 42 days in tier
2023-08-17 500+ → 600+ up after 44 days in tier
2023-07-04 400+ → 500+ up after 47 days in tier
2023-05-18 300+ → 400+ up after 84 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).

Compare head to head →

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Preview card ↗

Serial Number for Contact Form 7: 2K+ active installs, 5.0★ (1 reviews). Plugin Pulse (WP Mayor), as of 2026-08-29. https://plugins.wpmayor.com/plugin/serial-number-for-contact-form-7