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Swift SMTP (formerly Welcome Email Editor)

by David Vongries · Email & Marketing

Also makes 7 other plugins · 106.9K+ installs across the portfolio →

Swift SMTP is a free & simple SMTP Plugin for WordPress.

How scoring works →
76 Health · B
Maintenance 75/100
Rating quality 80/100
Support 70/100

76 health vs 63 average across 1,297 Email & Marketing plugins

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.

91 / 100

Excellent listing optimization

Well tuned across the board

Update recency 84/100
WP compatibility 100/100
Rating quality 83/100
Listing tuning 100/100

Daily downloads

Since 2022-10-05 · 1,425 days · wp.org + Plugin Pulse archive

+6% vs prior 30d
11Downloads · Aug 26

30-day downloads

Rolling 30-day volume · peaks are release surges

673

now · peak 13.3K

66130d downloads · Aug 26

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

Swift SMTP (formerly · #2623 you YaySMTP · #2009 Bit SMTP · #4316 MailHog for WordPres · #15493

Rating trend

Star average over time · dips mark rough releases

4.2Stars · Aug 26

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.

94per 1k installs · Aug 26

Release cadence

Occasionally updated
from wp.org release tags

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

2

releases in the last 12 months

9mo ago

latest release · v6.3

17

tagged releases on record

Recent releases

6.3 · 9mo ago6.2.2 · 10mo ago6.2.1 · 1.6y ago6.2 · 2.0y ago6.1.2 · 2.3y ago6.1.1 · 2.5y ago6.1 · 2.6y ago6.0.1 · 2.7y ago6.0 · 2.7y ago5.0.7 · 2.7y ago5.0.6 · 2.7y ago5.0.5 · 3.7y ago5.0.4 · 4.3y ago5.0.3 · 4.3y ago

What its installed base runs

via wordpress.org

Share of active installs on each version of this plugin · 52% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

v6.3 52%
v5.0 13%
v6.2 12%
v4.9 8.4%
v4.8 6%
Older / other versions 8%

Estimated active installs

The public count shows “7K+”. Our estimate pins where the real number sits.

tracked estimate
7K–8K ≈7.5K

Refined from the date this plugin crossed into its current band.

Install history · since 2015-11-12 · 1,434 observations

7KInstalls · Aug 26

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

N/A

Est. acquisition value

N/A

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

Version
6.3
Last updated
9mo ago
Added
2009-04-21 · 17 yrs old
Requires WP
4.6
Tested up to
6.9.7
Requires PHP

Recent reviews

All reviews on wp.org ↗
  1. Tormy Van Cool
    1.7y ago

    The idea of this plugin is really great.But unfortunately t goes to scr*w up the link/email/page of the lost password.So that when a user forgets the password will be never ever able to get the change password form. Only the login form is showing up.

    Read on wp.org ↗
  2. dwieyoko
    1.8y ago

    Works great! Using it to replace the default WordPress Email.

    Read on wp.org ↗
  3. MetalMusicMan
    2.5y ago

    This plugin is super easy to use and connect to whatever email service you are already using. Much better than the built-in / server-side emails that WordPress defaults to. Thank you <3

    Read on wp.org ↗
  4. Anonymous User 21136810
    2.6y ago

    Easy configuration.

    Read on wp.org ↗
  5. andyux
    2.9y ago

    Worked with no issues as described. WP 6.3.1. Nice work!

    Read on wp.org ↗
  6. kimmwood
    4.4y ago

    This was just what is was looking for. I have a client portal system within a CRM. The registration process for user involved them getting the standard WP password reset email which is messy. I was easily able to change the wording to suite my requirements. Thanks so much for your work on this great plug in.

    Read on wp.org ↗
  7. gtamborero
    4.6y ago

    I have been trying to use the wordpress Filters a while… After I found this plugin and its just perfect! So easy to configure!

    Read on wp.org ↗
  8. devongilchrist
    4.8y ago

    After doing some research about how to customize the new user welcome email, I was going to dig in and setup my own plugin. I found this plugin before I started and saved myself a good chunk of time–and it’s probably exactly what I would have created myself. Simple, perfect and allow me to do what I need to do (removed the login url and added some images and my own copy to the email). Thank you for publishing this so the rest of us can use it, too! FYI – if this isn’t working for you, you probably have theme or plugin conflicts. This is a very simple plugin.

    Read on wp.org ↗

Latest updates

via wp.org changelog

Recent releases and news for this plugin

  1. Version 6.3 New: Mailjet integration 6.3
  2. Version 6.2.2 Fixed: Translation notice issue Fixed: Added missing data sanitization 6.2.2
  3. Version 6.2.1 New: Email logs are now filterable Fixed: Broken reset password link 6.2.1
  4. Version 6.2 New: Email Logging Tested up to WordPress 6.6 6.2
  5. Version 6.1.2 Tested up to WordPress 6.5 6.1.2
  6. Version 6.1.1 New: Setting to force sender name & email Tweak: Add additional check to test email to be able to skip authentification 6.1.1

Known vulnerabilities

via Wordfence Intelligence

2 disclosed vulnerabilities on record for this plugin, all fixed in the current version. Sites on older versions stay exposed until they update.

  1. 2024-01-08 Cross-Site Request Forgery (CSRF) Affects <= 5.0.6 Patched in 5.0.7
  2. 2023-11-13 CVE-2023-47756 Missing Authorization Affects <= 5.0.5 Patched in 5.0.6

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 Hive

Automated install-time checks, tested on PHP 8.1.12 · WP 6.8.3

Low memory footprint
Low page-speed impact
Runs on latest PHP + WP
No PHP errors
No JS errors
Activates cleanly
No resource errors
No external HTTP errors
Optimized database use
Frequently updated

Languages

via translate.wordpress.org

Translated into 6 languages, 0 at 90% or more

Swedish 47%
German (Formal) 34%
Italian 21%
German 5%
German (Switzerland) 5%
German (Switzerland) Informal 5%

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

  1. 2026-05-02 8K+ → 7K+ down after 2 days in tier
  2. 2026-04-30 7K+ → 8K+ up after 1 days in tier
  3. 2026-04-29 8K+ → 7K+ down after 213 days in tier
  4. 2025-09-28 9K+ → 8K+ down after 4 days in tier
  5. 2025-09-24 8K+ → 9K+ up after 1 days in tier
  6. 2025-09-23 9K+ → 8K+ down after 171 days in tier
  7. 2025-04-05 10K+ → 9K+ 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).

Compare head to head →

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Swift SMTP (formerly Welcome Email Editor): 7K+ active installs, 4.2★ (68 reviews). Plugin Pulse (WP Mayor), as of 2026-08-29. https://plugins.wpmayor.com/plugin/welcome-email-editor