404 Notifier
by Crowd Favorite · Uncategorized
Also makes 7 other plugins · 1.9K+ installs across the portfolio →
Log 404 (file not found) errors on your site and get them delivered to you via e-mail or RSS.
43 health vs 56 average across 16,376 Uncategorized plugins
Removal-risk signals
53/100Maintenance 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 4+ years — the top precursor to removal once a vulnerability is found.
- Falling behind WordPress. Tested up to WordPress 6.0.14.
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.
Under-optimized
Biggest win: Update recency
To rank higher: Last updated 1527 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
30-day downloads
Rolling 30-day volume · peaks are release surges
122
now · peak 296
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
Rating trend
Star average over time · dips mark rough releases
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.
Release cadence
No release in a yearHow often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.
0
releases in the last 12 months
4.2y ago
latest release · v1.5.0
7
tagged releases on record
Recent releases
What its installed base runs
via wordpress.orgShare of active installs on each version of this plugin · 47% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.
Estimated active installs
The public count shows “600+”. Our estimate pins where the real number sits.
Refined from the date this plugin crossed into its current band.
Install history · since 2015-10-17 · 1,421 observations
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
Est. acquisition value
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.
Details
Recent review vibe
read from the latest 2 reviews to 2015-07-06Reviewers say it does catch broken links, but they're getting flooded with one email per 404 instead of a daily digest, and its use of php mail() means missing Date headers and no SMTP plugin compatibility.
Recent reviews
All reviews on wp.org ↗- ★★★★★ dtandersongb11.2y ago
After installing the plugin I was deluged with email messages highlighting 404 errors. In one day I had 103 messages, so removed the plugin. The site I installed in is used for testing various CMS programs and I had deleted Joomla a couple of months ago. The 404 errors were all related to the Joomla installation. Perhaps installing on a purely WordPress site would be more suitable. Also, a better response would be to have a single message with all errors found in one day, week, or some configurable interval.
Read on wp.org ↗ - ★★★★★ Grzegorz.Janoszka12.4y ago
Good plugin to check broken links and so on. It helped me a lot. There are unfortunately some issues – the plugin doesn’t send “Date: ” header and then its mails are caught as spam. Also I don’t understand the usage of php mail() instead of wp_mail(). The current setup makes this plugin incompatible with any SMTP plugin.
Read on wp.org ↗
Behavioral tests
via WP HiveAutomated install-time checks, tested on PHP 7.4.8 · WP 6.0
Growth timeline
Install-tier crossings we have observed, and how long each tier took to outgrow
- 2026-08-02 700+ → 600+ down after 174 days in tier
- 2026-02-09 800+ → 700+ down after 143 days in tier
- 2025-09-19 900+ → 800+ down after 159 days in tier
- 2025-04-13 1K+ → 900+ down
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).
-
Link Juice Keeper 10K+ installs · 4.3★ · 2 shared tags A -
404 to Home 1K+ installs · 4.1★ · 2 shared tags D - 4 404 Simple Redirect 900+ installs · 4.1★ · 2 shared tags D
-
Better 404 Redirect To Homepage 600+ installs · 4.1★ · 2 shared tags D - C Custom Error Pages 500+ installs · 4.5★ · 2 shared tags D
-
BugFu Console Debugger 300+ installs · 4.4★ · 2 shared tags D
Embed this report card
Drop a live Pulse card for 404 Notifier into a readme, a review or a deck. It updates itself.
<iframe src="https://plugins.wpmayor.com/embed/404-notifier" width="480" height="300" style="border:0" loading="lazy" title="404 Notifier — Plugin Pulse"></iframe> 404 Notifier: 600+ active installs, 3.0★ (2 reviews). Plugin Pulse (WP Mayor), as of 2026-08-29. https://plugins.wpmayor.com/plugin/404-notifier