MailboxValidator Email Validator
by MailboxValidator · Email & Marketing
Also makes 1 other plugin · 420+ installs across the portfolio →
Email verification for WordPress forms. Block disposable, block spam, block invalid email, block free email and role-based email.
Try it live opens a temporary test site in your browser, which can take about 20 seconds to load. Plugins that rely on outside services or a full server may not work completely there.
Health
B 81/100
Few reviews
Active installs
20+
≈20 estimated
Momentum
-9%
downloads vs prior 30d
Biggest opportunity: Swap “email checker” for “email validator”. “email checker” isn't earning its slot: you're not in the first 24 results for its own search. “email validator” sits at #20 untagged, close enough for a declared tag to move it up. All five slots are taken, so one has to go.
81 health vs 66 average across 2,122 Email & Marketing plugins
Install conversion
How it's measured →0.2%
of downloads still active
At least 20 of 11.6K lifetime downloads are still running, below its category: the median Email & Marketing plugin keeps 0.9%, across 1,295 plugins.
Downloads count every update, not just first installs, so older and more frequently released plugins read lower. Compare against other Email & Marketing plugins, not across the directory. wp.org reports active installs as the bottom of a band, so the real rate is this or higher.
This plugin shipped 5 releases in the last 12 months, and every existing install that updated counted as another download. wp.org publishes no split between first installs and updates, so we show the raw rate rather than guess at one.
Details
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.
Excellent listing optimization
Most to gain: Rating quality
Updated 62 days ago
Tested up to WordPress 6.9.11, the current branch or newer
1.0★ over 1 review, smoothed to 4.04★ and held back under 25 reviews
5 of 5 tags set · short description in place
To rank higher: Too few reviews to rank on quality — nudge happy users to leave one.
Get the full rank-higher report →Search visibility
How it's tracked →Directory searches this plugin turns up in, and which way each one is moving. WordPress.org publishes no history of search positions, so this starts the day we first tracked a keyword and never backfills.
Not enough tracked days yet to call a direction. Momentum needs at least three keywords measured a week or more apart.
wp.org is where the directory puts the plugin for that search. On merit is where it would sit if results were ranked on rating, support and updates, without the install boost. The last column is how far the wp.org position moved, from our first reading in the last 90 days to the latest.
| Keyword | wp.org | On merit | wp.org move, 90 days |
|---|---|---|---|
| mailboxvalidator | #2 | #2 | — |
| email validator | #20 | #24 | up 1 |
| email checker your tag | Not in the top 24 | ||
| email filter your tag | Not in the top 24 | ||
| email validation your tag | Not in the top 24 | ||
| email verify your tag | Not in the top 24 | ||
| form validation your tag | Not in the top 24 | ||
2 searches this plugin appeared in over the last 90 days. 5 of its tags aren't in the top 24 for their own search.
What to do about it
- Swap “email checker” for “email validator”. “email checker” isn't earning its slot: you're not in the first 24 results for its own search. “email validator” sits at #20 untagged, close enough for a declared tag to move it up. All five slots are taken, so one has to go.
Daily downloads
Since 5 Oct 2022 · 1,489 days · wp.org + Plugin Pulse archive
30-day downloads
Rolling 30-day volume · peak 315 · peaks are release surges
Directory rank
Ranked about #25,400 to #28,300, alongside the other plugins at 20+ installs. Plugins with the same install count swap places between wp.org requests, so this is where most of them sit. Checked monthly, last on 1 Nov 2026.
Update activity
Downloads in the last 30 days for every 1,000 active sites.
Not enough installs to measure. This needs at least 100 active sites; below that, a handful of downloads reads as tens of thousands.
Release cadence
Actively maintainedHow often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.
5
releases in the last 12 months
2mo ago
latest release · v1.7.4 · 1 Sep 2026
45
tagged releases on record
Recent releases
What its installed base runs
via wordpress.orgShare of active installs on each version of this plugin · 100% 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 “20+”. Our estimate pins where the real number sits.
Crossed into this band 12 days ago and a band this size takes about a year or more to cross, so the real count is still just over 20.
Install history since 4 Oct 2022
Recent reviews
All reviews on wp.org ↗- ★★★★★ Anonymous4.7y ago
We lost customers because their mail address was marked as invalid and the order couldn’t get through. They sent me a mail from that address proving that the address did actually work. We immediately uninstalled this plugin, it’s not trustworthy.
Read on wp.org ↗
Languages
via translate.wordpress.orgTranslated into 5 languages, 1 at 90% or more
AI assistants
How it's measured →Whether ChatGPT and Claude name this plugin when asked the category question, and whether the readme gives them something to quote.
Not measured yet for this plugin’s topics. Its tracked searches are not among the measured topics. See the topics measured so far.
Readme readiness
6 of 8 pass · checked 29 Oct 2026Can an assistant quote this readme? Eight deterministic checks over the wp.org listing, no model involved.
- ✓ Says what it does "Email verification for WordPress forms. Block disposable, block spam, block invalid email, block free email..."
- ✓ Has a FAQ 4 questions in the FAQ.
- ✓ FAQ asks real questions 4 of 4 read like questions a user would type.
- ! Names who it is for One audience phrase ("use this"); say who the plugin is for and what they use it for.
- ✓ Names what it works with Mentions WooCommerce, Contact Form 7, Mailchimp, Easy Digital Downloads and 1 more.
- ✓ Headings and lists 2 headings and 2 lists.
- ✓ Enough to quote 1,192 characters of description.
- ! Tags match the text Only 1 of 5 tags appear in the text ("email checker", "email filter", "email verify", "form validation" missing).
Growth timeline
Install-tier crossings we have observed, and how long each tier took to outgrow
- 2026-10-21 10+ → 20+ up after 42 days in tier
- 2026-09-09 20+ → 10+ down after 60 days in tier
- 2026-07-11 30+ → 20+ down after 17 days in tier
- 2026-06-24 20+ → 30+ up after 6 days in tier
- 2026-06-18 30+ → 20+ down after 1 days in tier
- 2026-06-17 20+ → 30+ up after 1 days in tier
- 2026-06-16 30+ → 20+ down after 5 days in tier
- 2026-06-11 20+ → 30+ up after 10 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).
- G GEV Email Validator — installs · 3.6★ · 4 shared tags
-
QuickEmailVerification 200+ installs · 4.2★ · 3 shared tags A -
Emailable – Premium Email Verification & Validation 30+ installs · 3.8★ · 3 shared tags D -
ZeroBounce Email Verification & Validation 900+ installs · 4.1★ · 2 shared tags A -
Antideo Email Validator 700+ installs · 3.7★ · 2 shared tags B -
Clearout Email Validator – Real-Time Email Verification on WordPress Forms 500+ installs · 4.0★ · 2 shared tags A
Embed this report card
Drop a live Pulse card for MailboxValidator Email Validator into a readme, a review or a deck. It updates itself.
<iframe src="https://plugins.wpmayor.com/embed/mailboxvalidator-email-validator" width="480" height="300" style="border:0" loading="lazy" title="MailboxValidator Email Validator — Plugin Pulse"></iframe> MailboxValidator Email Validator: 20+ active installs, 1.0★ (1 reviews). Plugin Pulse (WP Mayor), as of 2026-11-02. https://plugins.wpmayor.com/plugin/mailboxvalidator-email-validator
Spotted a number that looks wrong? Report a data issue and we'll check it against the source.