Simple SMTP by Maileroo
by Areeb Majeed · Email & Marketing
Ensure seamless WordPress email delivery with our all-in-one SMTP plugin, compatible with Gmail, Outlook, Maileroo, SendGrid, Mailgun, and more!
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
Few reviews
Active installs
800+
≈810 estimated
Momentum
+56%
downloads vs prior 30d
Biggest opportunity: Swap “mail”, “wp mail” and “smtp” for “sendgrid smtp”, “postmark” and “amazon ses”. “mail” isn't earning its slot: you're not in the first 24 results for its own search. “sendgrid smtp” sits at #15 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. “postmark” sits at #18 untagged, close enough for a declared tag to move it up. “smtp” isn't earning its slot: it only gets you to #21. “amazon ses” sits at #21 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 2,124 Email & Marketing plugins
Install conversion
How it's measured →8.8%
of downloads still active
At least 800 of 9.1K 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 3 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 216 days ago, past the ~180 days where wp.org starts discounting
Tested up to WordPress 6.9.11, the current branch or newer
5.0★ over 4 reviews, smoothed to 4.17★ 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.
29
Momentum
Losing ground
-1.6
Velocity
places per keyword, 28d
4%
Breadth
of keywords climbing, 28d
-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 |
|---|---|---|---|
| phpmailer your tag | #13 | #15 | down 1 |
| mailer your tag | #20 | #19 | down 2 |
| smtp your tag | #21 | #19 | down 2 |
| mailgun | #18 | #22 | down 3 |
| sendgrid smtp | #15 | #17 | down 3 |
| sendgrid | #23 | #23 | down 6 |
| smtp plugin | #24 | #22 | down 3 |
| outlook | #24 | #23 | — |
| postmark | #18 | #20 | down 2 |
| smtp mailer | #19 | #18 | 0 |
| gmail smtp | #20 | #18 | down 3 |
| amazon ses | #21 | #18 | down 4 |
| wordpress smtp | #22 | #21 | down 2 |
| mailgun smtp | #14 | #17 | down 3 |
| outlook smtp | #14 | #14 | down 3 |
| custom smtp | #15 | #18 | down 2 |
| mail your tag | Not in the top 24 | ||
| wp mail your tag | Not in the top 24 | ||
27 searches this plugin appeared in over the last 90 days, 16 listed. 11 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 “mail”, “wp mail” and “smtp” for “sendgrid smtp”, “postmark” and “amazon ses”. “mail” isn't earning its slot: you're not in the first 24 results for its own search. “sendgrid smtp” sits at #15 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. “postmark” sits at #18 untagged, close enough for a declared tag to move it up. “smtp” isn't earning its slot: it only gets you to #21. “amazon ses” sits at #21 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”. #13 puts you just past the first ten results, where almost all the clicks stop. The gap to close is small.
Daily downloads
Since 8 Aug 2024 · 817 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
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.
3
releases in the last 12 months
7mo ago
latest release · v1.1.6 · 31 Mar 2026
21
tagged releases on record
Recent releases
What its installed base runs
via wordpress.orgShare of active installs on each version of this plugin · 98% 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 “800+”. Our estimate pins where the real number sits.
Crossed into this band 32 days ago and a band this size takes about a year or more to cross, so the real count is still just over 800.
At the current install trend, crossing 900+ in roughly 204 days.
Install history since 7 Aug 2024
Recent reviews
All reviews on wp.org ↗- ★★★★★ Vizou1.0y ago
This plugin works fantastically with Maileroo API or SMTP. I use it with Formidable Forms on several sites and it not only works perfectly, when it was first released, the developers kept improving it quickly and responded immediately to any questions I had. Highly recommended!
Read on wp.org ↗ - ★★★★★ richward11.0y ago
I’m surprised this SMTP plugin hasn’t had more reviews or usage to date because I found it really easy to set up and use with its own Maileroo SMTP service. I’ve been looking for an easy SMTP setup for my client websites for them to receive form submission notifications. I want to use an API rather than username and password for better security and reliability. My clients have various email providers so I want something I can use for all of them. I like SMTP2Go but it is limited to 5 sending domains for its free SMTP service. I found Fluent SMTP very reliable to connect to other SMTP services but it has a limited number of services that it can connect to using API. I recommend this and Maileroo to anyone looking for a similar solution to reliably send form submissions from their sites.
Read on wp.org ↗ - ★★★★★ Olaf Lederer1.9y ago
I’m using the Maileroo API option and emails are delivered so fast!Excellent SMTP Relay service and a nice plugin.
Read on wp.org ↗ - ★★★★★ 2000px1.9y ago
Enter API key/SMTP settings, set senders details and test connection.That’s really all the plugin need to do and this does it.
Read on wp.org ↗
Languages
via translate.wordpress.orgTranslated into 1 language, 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
5 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 Short description names no action; say what the plugin does for the site.
- ✓ 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 ("essential for"); say who the plugin is for and what they use it for.
- ! Names what it works with Names no plugin, service or platform it works with.
- ✓ Headings and lists 3 headings and 1 list.
- ✓ Enough to quote 1,647 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
- 2026-10-01 700+ → 800+ up after 192 days in tier
- 2026-03-23 600+ → 700+ up after 1 days in tier
- 2026-03-22 700+ → 600+ down after 1 days in tier
- 2026-03-21 600+ → 700+ up after 1 days in tier
- 2026-03-20 700+ → 600+ down after 6 days in tier
- 2026-03-14 600+ → 700+ up after 36 days in tier
- 2026-02-06 500+ → 600+ up after 1 days in tier
- 2026-02-05 600+ → 500+ down after 14 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).
-
WP Mail SMTP SendGrid Edition 600+ installs · 3.6★ · 5 shared tags -
Zoho Mail for WordPress 20K+ installs · 3.8★ · 4 shared tags B -
Zoho ZeptoMail 5K+ installs · 4.2★ · 4 shared tags A - S SMTP 600+ installs · 3.5★ · 4 shared tags D
-
Simple SMTP Mailer 20+ installs · 3.6★ · 4 shared tags - E ElasticEmail Plugin 10+ installs · 4.0★ · 4 shared tags D
Embed this report card
Drop a live Pulse card for Simple SMTP by Maileroo into a readme, a review or a deck. It updates itself.
<iframe src="https://plugins.wpmayor.com/embed/simple-smtp-by-maileroo" width="480" height="300" style="border:0" loading="lazy" title="Simple SMTP by Maileroo — Plugin Pulse"></iframe> Simple SMTP by Maileroo: 800+ active installs, 5.0★ (4 reviews). Plugin Pulse (WP Mayor), as of 2026-11-02. https://plugins.wpmayor.com/plugin/simple-smtp-by-maileroo
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