by
Christof Moser
5 (2 reviews)
Actra SMTP
A minimal, object-oriented SMTP plugin for WordPress with zero external dependencies.
Actra SMTP ranks #28,158 among WordPress.org plugins with 20+ active installations, is #1,121 of 3,634 in the Communication category, a 5/5 rating from 2 reviews, and was last updated Sep 7, 2026. Data from WordPress.org, refreshed twice daily — see methodology.
Compatible with WP 7.1.4
v1.1.0
Current Version v1.1.0
Updated 2 months ago
Last Update on 07 Sep, 2026
Refreshed 1 week ago
Last Refreshed on
#1,121 of 3,634 in Communication
Top 50% by installs
Rank
#28,158
—
No change
Active Installs
20+
—
No change
KW Avg Position
77
0.5 worse
Downloads
515
+5 today
Support Resolved
0%
—
No change
Rating
100%
Review 5 out of 5
5
(2 reviews)
Next Milestone 30
20+
30+
5,413
Ranks to Climb
-
Growth Needed
8,000,000
Active Installs
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Current
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5.0
2 reviews
Overall
100%
5
2
(100%)
4
0
(0%)
3
0
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2
0
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1
0
(0%)
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- Version
- 1.1.0
- Last Updated
- Sep 07, 2026
- Requires WP
- 6.3+
- Tested Up To
- 7.1.4
- PHP Version
- 8.0 or higher
- Author
- Christof Moser
Support & Rating
- Rating
- ★ ★ ★ ★ ★ 5
- Reviews
- 2
- Support Threads
- 0
- Resolved
- 0%
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Frequently Asked Questions
Common questions about Actra SMTP
Yes, as long as you provide the correct SMTP host and credentials.
Yes. SMTP settings can be defined in wp-config.php using constants. Constants take priority over values stored in the database. Available constants: define('ACTRA_SMTP_FROM_EMAIL', 'noreply@example.com'); define('ACTRA_SMTP_HOST', 'smtp.example.com'); define('ACTRA_SMTP_USERNAME', 'user@example.com'); define('ACTRA_SMTP_PASSWORD', 'your-smtp-password'); define('ACTRA_SMTP_PORT', 587); define('ACTRA_SMTP_TLS', true); You may define individual constants, but using the full set is recommended to avoid mixed configuration sources. When a constant is defined, the matching field in the plugin settings screen is disabled and cannot be changed there.
Yes. For local environments that do not require SMTP authentication, such as some DDEV or Mailpit setups, you can intentionally define empty credentials: define('ACTRA_SMTP_USERNAME', ''); define('ACTRA_SMTP_PASSWORD', '');
In WordPress multisite installations, all sites share the same wp-config.php file. Any ACTRA_SMTP_* constant defined there applies network-wide to all sites in the multisite network. Database settings remain site-specific. This means each site can have its own SMTP settings in the database unless a matching ACTRA_SMTP_* constant is defined. If you need different SMTP settings for each site, configure them through each site's settings screen and avoid defining global ACTRA_SMTP_* constants.
No. The saved SMTP password is never displayed in the settings screen. If a password exists in the database, the field remains empty and can be left unchanged.
Existing plaintext passwords remain supported for backwards compatibility. When a new password is saved through the settings screen, it is stored encrypted in the WordPress database.
You should only have one SMTP plugin active at a time to avoid conflicts.
