Mailster WordPress Newsletter Plugin
by EverPress · Email & Marketing
Also makes 27 other plugins · 117.1K+ installs across the portfolio →
Free WordPress compatibility tester for Mailster. Check your site before buying the premium email newsletter plugin.
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.
M WP Mayor reviewed this plugin Mailster Review: Send Emails Right From Your WordPress Dashboard (Including Autoresponders) Read review ↗Health
C 69/100
Few reviews · Open vulnerability
Active installs
7K+
≈7.7K estimated
Momentum
+35%
downloads vs prior 30d
Biggest opportunity: Swap “email marketing”, “email newsletter” and “email signup” for “tester”, “email tester” and “wordpress newsletter”. “email marketing” isn't earning its slot: you're not in the first 24 results for its own search. “tester” sits at #5 untagged, close enough for a declared tag to move it up. “email newsletter” isn't earning its slot: it only gets you to #23. “email tester” sits at #6 untagged, close enough for a declared tag to move it up. “email signup” isn't earning its slot: it only gets you to #20. “wordpress newsletter” sits at #8 untagged, close enough for a declared tag to move it up. All five slots are taken, so one has to go.
69 health vs 66 average across 2,120 Email & Marketing plugins
Install conversion
How it's measured →15%
of downloads still active
At least 7K of 45.6K lifetime downloads are still running, above its category: the median Email & Marketing plugin keeps 0.9%, across 1,294 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 1 release 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 16 days ago
Tested up to WordPress 7.1.4, the current branch or newer
3.5★ over 8 reviews, smoothed to 4.02★ and held back under 25 reviews
5 of 5 tags set · short description in place
1 of 1 support threads resolved in the last 2 months
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.
46
Momentum
Holding steady
+0.2
Velocity
places per keyword, 27d
38%
Breadth
of keywords climbing, 27d
-0.2
Acceleration
recent half vs earlier
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 |
|---|---|---|---|
| mailster | #1 | #1 | up 8 |
| newsletter signup your tag | #5 | #17 | up 1 |
| tester | #5 | #10 | 0 |
| wordpress newsletter | #8 | #21 | down 2 |
| email tester | #6 | #15 | 0 |
| drip | #8 | #21 | 0 |
| newsletter | #16 | #23 | 0 |
| newsletters your tag | #20 | #24 | up 1 |
| email signup your tag | #20 | #21 | down 1 |
| email newsletter your tag | #23 | #23 | up 1 |
| birthday | #13 | #23 | 0 |
| signup | #19 | #21 | down 3 |
| email newsletters | #21 | #24 | up 2 |
| newsletter wordpress plugin | #14 | #24 | up 1 |
| wordpress wordpress signup | #15 | #22 | down 5 |
| email marketing your tag | Not in the top 24 | ||
58 searches this plugin appeared in over the last 90 days, 15 listed. 43 left out as unrelated or noise (years, numbers, stray words). 1 of its tags isn't in the top 24 for their own search.
What to do about it
- Swap “email marketing”, “email newsletter” and “email signup” for “tester”, “email tester” and “wordpress newsletter”. “email marketing” isn't earning its slot: you're not in the first 24 results for its own search. “tester” sits at #5 untagged, close enough for a declared tag to move it up. “email newsletter” isn't earning its slot: it only gets you to #23. “email tester” sits at #6 untagged, close enough for a declared tag to move it up. “email signup” isn't earning its slot: it only gets you to #20. “wordpress newsletter” sits at #8 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 · 1,488 days · wp.org + Plugin Pulse archive
30-day downloads
Rolling 30-day volume · peak 1.2K · peaks are release surges
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
Health trend
Composite health score, snapshotted daily
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
Occasionally updatedHow often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.
1
releases in the last 12 months
16d ago
latest release · v2.0.3 · 15 Oct 2026
8
tagged releases on record
Recent releases
What its installed base runs
via wordpress.orgShare of active installs on each version of this plugin · 73% 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 “7K+”. Our estimate pins where the real number sits.
Crossed into this band 3 months ago; a band this size takes about a year or more to cross, which places it about 72% of the way through.
Install history since 5 Sep 2019
Recent reviews
All reviews on wp.org ↗- ★★★★★ ksaltik10mo ago
Is this plugin supported or developed .
Read on wp.org ↗ - ★★★★★ ninjaneen1.1y ago
I don’t often take the time to write a review but the “support” for this plugin is absolutely abysmal. The last FOUR WEEKS of trying to switch from legacy Mailster to new forms has been excruciating. It’s been a complete waste of my time as a developer and a complete waste of my client’s budget, having me liase all this time only to have to give up because ‘support’ won’t help. Firstly the ‘legacy’ forms were hacked and they were being used to send spam, so the hosting company took the website offline until the issue was sorted. I completely removed the legacy form, got the website back online, and then tried to switch to their new forms….. and then the fun really started! Their documentation is awful. It’s not even basic. So I kept having to reach out to ask one excruciating question after the next, one question a day, one answer a day. The days and weeks dragged by and we still can’t create a ‘Mailster Homepage’ which is the new feature that replaced the ‘legacy’ feature. This newsletter was used on a large health organisation website which is funded by the EU. Of course we’re not going to grant 3rd party access to a live website so that can start testing. ONE MONTH LATER and the issues are still not resolved, because ‘support’ have said that they won’t help. The reason? We don’t have a license for the staging/development site which they can use to troubleshoot the issue. We have now moved to a popular 3rd party solution because this last issue was really just the last straw. When the plugin was still working it would take an entire TWO DAYS just to send ONE newsletter to a small list of 2400 subscribers, even after using their ‘intelligent email throttling” or whatever fancy name they give for a tool that makes no difference at all. We’re not on cheap hosting either. We have dedicated CPU and processors. Don’t waste your time with this plugin.
Read on wp.org ↗ - ★★★★★ emma3363.3y ago
What a nightmare of a plugin. There are virtually no instructions on how to set it up, it’s unreliable and has lots of bugs. We had an issue with it trying to send hundreds of emails without knowing why it was doing it and there’s no way of knowing how to solve the issues.
Read on wp.org ↗ - ★★★★★ Patryk3.7y ago
I’ve been using the plugin for 2 years, it works averagely. Since then they’ve only introduced up to 3 automations, which rarely work. It still doesn’t load blocks and constantly displays error messages. The worst-optimized newsletter plugin. Considering autoresponders, I’ve tried many times to figure out why some work (despite the same settings) while others don’t send. I also don’t understand why some subscribers receive Auto-responder messages while others don’t, despite being added to the same lists. The time since they registered doesn’t differ from the time those who receive these messages. The plugin requires a lot of patience from developers, not to mention non-technical users. This topic was modified 3 years, 5 months ago by Yui. This topic was modified 1 year, 4 months ago by Patryk. This topic was modified 8 months, 2 weeks ago by Patryk. This topic was modified 8 months, 2 weeks ago by Patryk.
Read on wp.org ↗ - ★★★★★ Musabah-hati5.4y ago
the plugin works very well. Thank you
Read on wp.org ↗ - ★★★★★ Tobias6.6y ago
Plugin works as intended. Great. This topic was modified 6 years, 3 months ago by Tobias.
Read on wp.org ↗ - ★★★★★ StevenW1238.8y ago
Hi, Are you planning to update this, please? Tested up to: 4.8.4 Also, is this the same plugin that features on Codecanyon? If so, it’s a nice plugin! What limitations are there on this version, please? Thanks, Steve
Read on wp.org ↗ - ★★★★★ josemanuel89.3y ago
This is by far the most complete newsletter solution I came across. All built right into the WordPress dashboard without any subscriber limits for a one time fee. Love it!
Read on wp.org ↗
Latest updates
via wp.org changelogRecent releases and news for this plugin
- — Version 2.0.2 removed Freemius SDK 2.0.2
- — Version 2.0.1 updated: readme 2.0.1
- — Version 2.0.0 Completely rewritten from scratch For further details please visit the changelog on the Mailster Homepage 2.0.0
- — Version 2.0.3 fixed: plugin no longer fails to load when Composer vendor/ is missing after Freemius removal changed: FAQ clarifies that installing the full Mailster ZIP replaces and deactivates the tester changed: support links point 2.0.3
Security history
via Wordfence Intelligence5 open vulnerabilities affect the current version (2.0.3). 1 of 6 disclosed are patched.
- Open High · 7.2 Mailster - Email Newsletter Plugin for WordPress <= 4.1.17 - Authenticated (Editor+) Arbitrary File Upload ↗2026-07-22 CVE-2026-27064 Unrestricted Upload of File with Dangerous Type Affects <= 4.1.17 Patched in 4.1.18
- 2025-10-27 CVE-2025-64203 Improper Neutralization of Input During Web Page Generation Affects < 4.1.14 Patched in 4.1.14
- 2024-06-28 CVE-2024-37433 Improper Neutralization of Input During Web Page Generation Affects <= 4.0.9 Patched in 4.0.10
- 2024-04-15 CVE-2024-32523 Improper Control of Filename for Include/Require Statement in PHP Program Affects <= 4.0.6 Patched in 4.0.7
- 2024-03-28 CVE-2024-30503 Improper Neutralization of Input During Web Page Generation Affects <= 1.0.3 Patched in 2.0.0
- 2020-10-14 Improper Neutralization of Input During Web Page Generation Affects <= 2.4.5.1 Patched in 2.4.9
Vulnerability records provided by Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. License and terms.
CVE records: Copyright 1999-2026 The MITRE Corporation. CVE terms of use.
Behavioral tests
via WP HiveAutomated install-time checks, tested on PHP 8.1.12 · WP 6.5.5
Languages
via translate.wordpress.orgTranslated into 1 language, 0 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.
Share of voice
How often each assistant names Mailster WordPress Newsletter Plugin when asked about this topic, where it comes in the answer, and how that compares with its wp.org search position. Latest run 25 Oct 2026.
- Assistants
- ChatGPT, Claude
- Topics tracked
- Newsletter
Readme readiness
7 of 8 pass · checked 27 Oct 2026Can an assistant quote this readme? Eight deterministic checks over the wp.org listing, no model involved.
- ! Says what it does Short description names no action; say what the plugin does for the site.
- ✓ Has a FAQ 5 questions in the FAQ.
- ✓ FAQ asks real questions 5 of 5 read like questions a user would type.
- ✓ Names who it is for Names its audience or use cases ("use it", "designed for").
- ✓ Names what it works with Mentions WooCommerce.
- ✓ Headings and lists 11 headings and 2 lists.
- ✓ Enough to quote 3,680 characters of description.
- ✓ Tags match the text 3 of 5 tags appear in the text; "email signup", "newsletter signup" do not.
Growth timeline
Install-tier crossings we have observed, and how long each tier took to outgrow
- 2026-07-22 8K+ → 7K+ down after 95 days in tier
- 2026-04-18 9K+ → 8K+ down after 2 days in tier
- 2026-04-16 8K+ → 9K+ up after 1 days in tier
- 2026-04-15 9K+ → 8K+ down after 97 days in tier
- 2026-01-08 10K+ → 9K+ down after 846 days in tier
- 2023-09-15 20K+ → 10K+ 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).
-
Formilla Edge Targeted Messaging Platform for Sales and Marketing 10+ installs · 4.1★ · 3 shared tags A -
FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution 80K+ installs · 4.7★ · 2 shared tags A -
Kit (formerly ConvertKit) – Email Newsletter, Email Marketing, Membership, Subscribers and Landing Pages 40K+ installs · 4.7★ · 2 shared tags A -
weMail – Email Marketing, Newsletters Builder & Email Automations for WooCommerce 10K+ installs · 4.0★ · 2 shared tags B -
MailUp for WordPress – Email and Newsletter Subscription Form 2K+ installs · 3.7★ · 2 shared tags B -
Mailster Gravity Forms 800+ installs · 4.0★ · 2 shared tags B
Embed this report card
Drop a live Pulse card for Mailster WordPress Newsletter Plugin into a readme, a review or a deck. It updates itself.
<iframe src="https://plugins.wpmayor.com/embed/mailster" width="480" height="300" style="border:0" loading="lazy" title="Mailster WordPress Newsletter Plugin — Plugin Pulse"></iframe> Mailster WordPress Newsletter Plugin: 7K+ active installs, 3.5★ (8 reviews). Plugin Pulse (WP Mayor), as of 2026-10-31. https://plugins.wpmayor.com/plugin/mailster
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