Report - WP Mail SMTP 4.2.0

Does WP Mail SMTP work with WordPress 6.7.1 and PHP 8.1.12? A smoke test was performed on 2024-11-21 15:38:52 UTC.

Summary

Errors

	No PHP errors, warnings or notices
	No JavaScript exceptions
	All test pages loaded successfully
	No resource errors
	Looks good! No problems were detected.

Performance

Memory usage: 329.35 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: insignificant.
The plugin didn't make the site noticeably slower.

Environment

WordPress version	6.7.1
PHP version	8.1.12
MySQL version	10.6.10
PHP memory limit	512M

Plugin Info

Last updated	2026-04-16T15:13:00+00:00
Active installs	4,000,000+
WordPress.org page	https://wordpress.org/plugins/wp-mail-smtp/
Badges	Get badge code

Pages 8

WP Mail SMTP › Setup Wizard

URL	/wp-admin/admin.php?page=wp-mail-smtp-setup-wizard#/
Requested URL	/wp-admin/plugins.php?action=activate&plugin=wp-mail-smtp%2Fwp_mail_smtp.php&plugin_status=all&paged=1&s&_wpnonce=22fed51b2c
Aspect	after-activation
HTTP status	200
Load time	0.632 s
Memory usage	N/A
JS errors	None
Resource errors	None

WP Mail SMTP

URL	/wp-admin/admin.php?page=wp-mail-smtp
Aspect	menu-item
HTTP status	200
Load time	0.647 s
Memory usage	3.94 MiB
JS errors	None
Resource errors	None

WP Mail SMTP → Email Log

URL	/wp-admin/admin.php?page=wp-mail-smtp&tab=logs
Requested URL	/wp-admin/admin.php?page=wp-mail-smtp-logs
Aspect	menu-item
HTTP status	200
Load time	0.296 s
Memory usage	3.82 MiB
JS errors	None
Resource errors	None

WP Mail SMTP → Email Reports

URL	/wp-admin/admin.php?page=wp-mail-smtp-reports
Aspect	menu-item
HTTP status	200
Load time	0.275 s
Memory usage	3.82 MiB
JS errors	None
Resource errors	None

WP Mail SMTP → Tools

URL	/wp-admin/admin.php?page=wp-mail-smtp-tools
Aspect	menu-item
HTTP status	200
Load time	0.225 s
Memory usage	3.96 MiB
JS errors	None
Resource errors	None

WP Mail SMTP → About Us

URL	/wp-admin/admin.php?page=wp-mail-smtp-about
Aspect	menu-item
HTTP status	200
Load time	0.494 s
Memory usage	3.82 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.210 s
Memory usage	3.58 MiB
JS errors	None
Resource errors	None

Dashboard ‹ Test site — WordPress

URL	/wp-admin/index.php
Aspect	new-meta-boxes
HTTP status	200
Load time	0.323 s
Memory usage	3.89 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.351 s	0.325 s	-0.026 s	3.48 MiB	3.89 MiB	+ 417.03 KiB
/wp-admin/edit.php	0.208 s	0.221 s	+0.013 s	3.54 MiB	3.91 MiB	+ 372.03 KiB
/wp-admin/post-new.php	0.838 s	0.779 s	-0.059 s	5.93 MiB	6.27 MiB	+ 352.98 KiB
/wp-admin/upload.php	0.778 s	0.565 s	-0.213 s	3.5 MiB	3.82 MiB	+ 331.66 KiB
/wp-admin/options-writing.php	0.210 s	0.245 s	+0.035 s	3.47 MiB	3.8 MiB	+ 336.18 KiB
/wp-admin/media-new.php	0.273 s	0.260 s	-0.013 s	3.46 MiB	3.8 MiB	+ 344.38 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.185 s	0.204 s	+0.019 s	3.48 MiB	3.82 MiB	+ 350.27 KiB
/wp-admin/post-new.php?post_type=page	0.712 s	0.642 s	-0.070 s	5.92 MiB	6.26 MiB	+ 348.52 KiB
/wp-admin/options-discussion.php	0.314 s	0.273 s	-0.041 s	3.47 MiB	3.8 MiB	+ 332.68 KiB
/wp-admin/edit-comments.php	0.211 s	0.421 s	+0.210 s	3.5 MiB	3.82 MiB	+ 332.91 KiB
/	0.321 s	0.259 s	-0.062 s	3.48 MiB	3.58 MiB	+ 104.18 KiB
Average	0.400 s	0.381 s	-0.019 s	3.93 MiB	4.25 MiB	+ 329.35 KiB

Code Statistics

Note: Third-party libraries and minified JS/CSS files are excluded from these statistics where possible, so the numbers you see here may be lower than those reported by other tools.

PHP

Language		%	Lines of code	Comment lines	Files
	PHP	96.9%	46,682	33,087	524
	JavaScript	2.2%	1,041	472	6
	CSS	0.5%	235	5	1
	SVG	0.4%	198	0	98
Total			48,156	33,564	629

PHP Code Analysis | More results »

Lines of code	21,842
Total complexity	3,833
Median class complexity	15.0
Median method complexity	2.0
Most complex class	WPMailSMTP\Options
Most complex function	WPMailSMTP\Options::is_const_defined()

Classes	124
Methods	1,099
Functions	6

Additions

Things that the plugin adds to the site. This section is not intended to be comprehensive. The test tool only looks for a few specific types of added content.

Database Tables 2

wp_wpmailsmtp_debug_events
wp_wpmailsmtp_tasks_meta

Options `wp_options` 10

action_scheduler_lock_async-request-runner
wp_mail_smtp
wp_mail_smtp_activated
wp_mail_smtp_activated_time
wp_mail_smtp_activation_prevent_redirect
wp_mail_smtp_debug_events_db_version
wp_mail_smtp_initial_version
wp_mail_smtp_migration_version
wp_mail_smtp_review_notice
wp_mail_smtp_version

Custom Post Types 1

ID	Name
scheduled-action	Scheduled Actions

Meta Boxes

{
    "dashboard": {
        "wp_mail_smtp_reports_widget_lite": {
            "title": "WP Mail SMTP",
            "context": "normal"
        }
    }
}

PHP Error Log

The log file is empty.

WP Mail SMTP 4.2.0