Report - WP Mail SMTP 4.8.0

Does WP Mail SMTP work with WordPress 6.9.4 and PHP 8.1.12? A smoke test was performed on 2026-04-16 15:19:49 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: 371.06 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.076 seconds
The average page load time increased by this amount after activating the plugin.

Environment

WordPress version	6.9.4
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=bbe9efdb8d
Aspect	after-activation
HTTP status	200
Load time	1.740 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	0.840 s
Memory usage	4.22 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	0.376 s
Memory usage	4.08 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	0.518 s
Memory usage	4.08 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	0.390 s
Memory usage	4.23 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	0.775 s
Memory usage	4.08 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.242 s
Memory usage	4.33 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	0.382 s
Memory usage	4.21 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.476 s	0.602 s	+0.126 s	3.78 MiB	4.21 MiB	+ 440.47 KiB
/wp-admin/edit.php	0.373 s	0.310 s	-0.063 s	3.79 MiB	4.19 MiB	+ 412.98 KiB
/wp-admin/post-new.php	0.869 s	0.877 s	+0.008 s	6.31 MiB	6.73 MiB	+ 433.24 KiB
/wp-admin/upload.php	0.444 s	1.110 s	+0.666 s	3.74 MiB	4.09 MiB	+ 354.81 KiB
/wp-admin/options-writing.php	0.350 s	0.467 s	+0.117 s	3.72 MiB	4.06 MiB	+ 357.23 KiB
/wp-admin/media-new.php	0.504 s	0.403 s	-0.101 s	3.71 MiB	4.06 MiB	+ 365.42 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.323 s	0.293 s	-0.030 s	3.72 MiB	4.08 MiB	+ 371.32 KiB
/wp-admin/post-new.php?post_type=page	0.686 s	0.728 s	+0.042 s	6.3 MiB	6.72 MiB	+ 426.73 KiB
/wp-admin/options-discussion.php	0.365 s	0.429 s	+0.064 s	3.72 MiB	4.06 MiB	+ 353.73 KiB
/wp-admin/edit-comments.php	0.344 s	0.339 s	-0.005 s	3.74 MiB	4.08 MiB	+ 353.95 KiB
/	0.319 s	0.332 s	+0.013 s	4.12 MiB	4.33 MiB	+ 211.73 KiB
Average	0.459 s	0.535 s	+0.076 s	4.24 MiB	4.6 MiB	+ 371.06 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	96.2%	43,542	30,224	434
	JavaScript	2.7%	1,232	552	7
	SVG	0.6%	257	0	117
	CSS	0.5%	235	5	1
Total			45,266	30,781	559

PHP Code Analysis | More results »

Lines of code	24,785
Total complexity	4,461
Median class complexity	15.5
Median method complexity	2.0
Most complex class	WPMailSMTP\Options
Most complex function	WPMailSMTP\Options::is_const_defined()

Classes	140
Methods	1,244
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 4.8.0