MailerSend – Official SMTP Integration
by MailerSend · Email & Marketing
Also makes 1 other plugin · 2.1K+ installs across the portfolio →
Improve your deliverability and avoid the spam box with MailerSend’s SMTP server. Check your analytics to improve your emails for better conversion!
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 79/100
no flags
Active installs
2K+
≈2.8K estimated
Momentum
-5%
low volume, under 1,000 downloads a month
Biggest opportunity: Swap “email” and “wp mail” for “official” and “smtp server”. “email” isn't earning its slot: you're not in the first 24 results for its own search. “official” sits at #9 untagged, close enough for a declared tag to move it up. “wp mail” isn't earning its slot: you're not in the first 24 results for its own search. “smtp server” sits at #19 untagged, close enough for a declared tag to move it up. All five slots are taken, so one has to go.
79 health vs 66 average across 2,127 Email & Marketing plugins
Install conversion
How it's measured →7.0%
of downloads still active
At least 2K of 28.6K lifetime downloads are still running, above 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 4 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 129 days ago
Tested up to WordPress 6.9.11; the current branch is 7.1
2.8★ over 12 reviews, weighted for review count to 3.8★ 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.
34
Momentum
Losing ground
-0.3
Velocity
places per keyword, 28d
10%
Breadth
of keywords climbing, 28d
-0.4
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 |
|---|---|---|---|
| mailersend your tag | #1 | #4 | 0 |
| official | #9 | #16 | 0 |
| phpmailer your tag | #14 | #18 | down 1 |
| smtp server | #19 | #20 | down 1 |
| smtp your tag | #24 | #21 | 0 |
| custom smtp | #20 | #20 | down 2 |
| wp phpmailer | #22 | #22 | 0 |
| email your tag | Not in the top 24 | ||
| wp mail your tag | Not in the top 24 | ||
12 searches this plugin appeared in over the last 90 days, 7 listed. 5 left out as unrelated or noise (years, numbers, stray words). 2 of its tags aren't in the top 24 for their own search.
What to do about it
- Swap “email” and “wp mail” for “official” and “smtp server”. “email” isn't earning its slot: you're not in the first 24 results for its own search. “official” sits at #9 untagged, close enough for a declared tag to move it up. “wp mail” isn't earning its slot: you're not in the first 24 results for its own search. “smtp server” sits at #19 untagged, close enough for a declared tag to move it up. All five slots are taken, so one has to go.
- One page off on “phpmailer”. #14 puts you just past the first ten results, where almost all the clicks stop. The gap to close is small.
Daily downloads
Since 5 Oct 2022 · 1,490 days · wp.org + Plugin Pulse archive
30-day downloads
Rolling 30-day volume · peak 2.1K · 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
Actively maintainedHow often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.
4
releases in the last 12 months
4mo ago
latest release · v1.0.8 · 26 Jun 2026
9
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 “2K+”. Our estimate pins where the real number sits.
Crossed into this band 2.4 years ago; the previous band took 15 months to cross, which places it about 80% of the way through.
Install history since 5 May 2022
Recent reviews
All reviews on wp.org ↗- ★★★★★ primerpizza9mo ago
All set up but nothing arrives except the test email. This topic was modified 5 months, 1 week ago by primerpizza.
Read on wp.org ↗ - ★★★★★ faelmarcondeli1.3y ago
3 templates for plan free is a Joke..
Read on wp.org ↗ - ★★★★★ Nico_S2.0y ago
As far as I could see, the plugin seems to work Ok, it’s a shame I can’t say the same for the ‘practices’ of the company.
Read on wp.org ↗ - ★★★★★ savagemic3.6y ago
The mailersend application is fantastic. I can’t speak highly enough about deliverability and functionality. However, if you are using this as a transactional email system for WooCommerce you cannot use the mailersend templates (which are particularly good) and have Mailersend send other WordPress-related emails, such as comment notifications and other emails such as Gravity Form entries. You cannot run this plugin and the MailerSend WooCommerce plugin together as it will create a critical WordPress error on transactional email sends. This seems like an oversight and I’m not really sure why these two plugins cannot be one and handle not only transactional WooCommerce but also WordPress emails.
Read on wp.org ↗ - ★★★★★ xyrik3.6y ago
I don’t understand why reviewers gave this plugin a negative review “for not working” because it works perfectly. They must have forgotten to verify their account with MailerSend. The domain verification and account approval took less than a day to complete and I could send out emails in a blink of an eye. I switched to MailerSend because my Namecheap SMTP took twice the amount of time to post my contact form. With MailerSend, form submission takes 3-4 seconds. Kudos and thumbs up to the developers! I highly recommend MailerSend!
Read on wp.org ↗ - ★★★★★ vikx013.8y ago
I have a mailersend account. I checked my creds many times and set them correctly in the plugin. But every time I test I get “wp_mail_failed – SMTP Error: Could not authenticate.”
Read on wp.org ↗ - ★★★★★ rastrolab3.9y ago
MailerSend’s SMTP plug in made it easy for us to integrate email in our website. Easy to set up, and great support. They also have well design email templates to make the job easier. We’ve been using it for a 5 months not and we’re happy with the service. Great for newbies and no-coders too.
Read on wp.org ↗ - ★★★★★ Olaf Lederer4.0y ago
<p>I’m using MailerSend as transactional email provider because they offer some great features that other providers don’t have.<br />Beside this they have a great deliverability, sending speed and the MailerSend interface is really nice.</p> <p>The plugin does a good job, but it’s much to basic in my opinion.<br />I’m missing features like:<br />- Import / export settings<br />- Custom email headers<br />- a simple log file (now I need to check every issue via the MailerSend portal)</p> <p>And why sending emails via SMTP and not via the MailerSend API?</p> This topic was modified 3 years, 2 months ago by Olaf Lederer. This topic was modified 3 years, 2 months ago by Olaf Lederer.
Read on wp.org ↗
Latest updates
via wp.org changelogRecent releases and news for this plugin
- — Version 1.0.8 Security fixes 1.0.8
- — Version 1.0.7 Security fixes 1.0.7
- — Version 1.0.6 Tested up to the latest WordPress version 1.0.6
- — Version 1.0.5 Automated deployments 1.0.5
- — Version 1.0.4 Tested up to the latest WordPress version 1.0.4
- — Version 1.0.3 Update conflict list Tested up to the latest WordPress version 1.0.3
Security history
via Wordfence IntelligenceThe 1 disclosed vulnerability is patched in the current version (1.0.8). Sites still on an older version should update.
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.
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.
This plugin’s searches fall outside the topics measured so far. See the topics measured so far.
Readme readiness
7 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 "Improve your deliverability and avoid the spam box with MailerSend’s SMTP server. Check your analytics to i..."
- ✓ 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 Never says who the plugin is for or what they use it for.
- ✓ Names what it works with Mentions Zapier.
- ✓ Headings and lists 6 headings and 2 lists.
- ✓ Enough to quote 2,098 characters of description.
- ✓ Tags match the text 3 of 5 tags appear in the text; "phpmailer", "wp_mail" do not.
Growth timeline
Install-tier crossings we have observed, and how long each tier took to outgrow
- 2024-06-06 1K+ → 2K+ up after 440 days in tier
- 2023-03-24 900+ → 1K+ up after 26 days in tier
- 2023-02-26 800+ → 900+ up after 30 days in tier
- 2023-01-27 700+ → 800+ up after 15 days in tier
- 2023-01-12 600+ → 700+ up after 44 days in tier
- 2022-11-29 500+ → 600+ up after 56 days in tier
- 2022-10-04 200+ → 500+ up
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).
-
WPO365 | MICROSOFT 365 GRAPH MAILER 10K+ installs · 4.7★ · 4 shared tags A -
SMTP Mailer 70K+ installs · 4.5★ · 3 shared tags A -
ActiveCampaign Postmark for WordPress 50K+ installs · 4.5★ · 3 shared tags C -
SMTP2GO for WordPress – Email Made Easy 40K+ installs · 4.8★ · 3 shared tags A -
Zoho Mail for WordPress 20K+ installs · 3.8★ · 3 shared tags B -
Send Emails with Mandrill 6K+ installs · 4.4★ · 3 shared tags A
Embed this report card
Drop a live Pulse card for MailerSend – Official SMTP Integration into a readme, a review or a deck. It updates itself.
<iframe src="https://plugins.wpmayor.com/embed/mailersend-official-smtp-integration" width="480" height="300" style="border:0" loading="lazy" title="MailerSend – Official SMTP Integration — Plugin Pulse"></iframe> MailerSend – Official SMTP Integration: 2K+ active installs, 2.8★ (12 reviews). Plugin Pulse (WP Mayor), as of 2026-11-02. https://plugins.wpmayor.com/plugin/mailersend-official-smtp-integration
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