MailCheck.co: Validate emails in one click
by Mailcheck.co · Email & Marketing
VALIDATE YOUR MAILING LIST IN ONE CLICK Be confident your mailing list contains only real emails addresses, get rid of bots and inactive users
45 health vs 63 average across 1,297 Email & Marketing 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 3+ 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 1351 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 · 1,426 days · wp.org + Plugin Pulse archive
30-day downloads
Rolling 30-day volume · peaks are release surges
130
now · peak 130
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
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
3.7y ago
latest release · v1.2
6
tagged releases on record
Recent releases
What its installed base runs
via wordpress.orgShare of active installs on each version of this plugin. 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 “10+”. Our estimate pins where the real number sits.
Modeled within the band wp.org reports; tightens as we track daily.
Install history · since 2021-08-17 · 1,385 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 reviews
All reviews on wp.org ↗- ★★★★★ Bosch_B5.4y ago
Just started using this plugin for a community website. It is easy-to-use and checks “trust-rate” validation on-the-go in real-time. fast. It also works directly integrated with Mailchimp and Zapier and also has the option to use custom API. Or simply upload all emails as CSV to our mailcheck.co back office, to perform a check on our already existing member list. Highly recommend this plugin. It is an Alternative to Zerobounce, very useful for our protection, to decrease the email bounce rate, and to know exactly who’s behind an email address.
Read on wp.org ↗
Behavioral tests
via WP HiveAutomated install-time checks, tested on PHP 8.1.12 · WP 6.1.1
Growth timeline
Install-tier crossings we have observed, and how long each tier took to outgrow
No tier crossings observed yet.
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).
-
All In One Form Verification 10+ installs · 4.0★ · 3 shared tags D -
Customer Email Verification for WooCommerce 8K+ installs · 4.6★ · 2 shared tags A -
User Verification by PickPlugins 5K+ installs · 4.4★ · 2 shared tags A -
ZeroBounce Email Verification & Validation 900+ installs · 4.1★ · 2 shared tags A -
Clearout Email Validator – Real-Time Email Verification on WordPress Forms 500+ installs · 4.0★ · 2 shared tags B -
DeBounce Email Validator 300+ installs · 3.9★ · 2 shared tags B
Embed this report card
Drop a live Pulse card for MailCheck.co: Validate emails in one click into a readme, a review or a deck. It updates itself.
<iframe src="https://plugins.wpmayor.com/embed/mailcheck-co" width="480" height="300" style="border:0" loading="lazy" title="MailCheck.co: Validate emails in one click — Plugin Pulse"></iframe> MailCheck.co: Validate emails in one click: 10+ active installs, 5.0★ (1 reviews). Plugin Pulse (WP Mayor), as of 2026-08-31. https://plugins.wpmayor.com/plugin/mailcheck-co