Report - Connect Contact Form 7 and Mailchimp 0.9.44

Does "Contact Form 7 Extension For Mailchimp" work with WordPress 6.9 and PHP 8.1.12? A smoke test was performed on 2025-12-09 17:02:01 UTC.

Summary

Errors

	No PHP errors, warnings or notices
	No JavaScript exceptions
1	Page failed to load 1 403 Forbidden
	No resource errors

Performance

Memory usage: 64.3 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	6.9
PHP version	8.1.12
MySQL version	10.6.10
PHP memory limit	512M

Plugin Info

Last updated	2026-02-26T04:46:00+00:00
Active installs	50,000+
WordPress.org page	https://wordpress.org/plugins/contact-form-7-mailchimp-extension/
Badges	Get badge code

Pages 2

WordPress › Error

URL	/wp-admin/admin.php?page=wpcf7&post=&active-tab=Chimpmatic
Requested URL	/wp-admin/plugins.php?action=activate&plugin=contact-form-7-mailchimp-extension%2Fchimpmatic-lite.php&plugin_status=all&paged=1&s&_wpnonce=8aa49be212
Aspect	after-activation
HTTP status	403
Load time	0.569 s
Memory usage	N/A
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.190 s
Memory usage	4.15 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.390 s	0.337 s	-0.053 s	3.77 MiB	3.79 MiB	+ 16.23 KiB
/wp-admin/edit.php	0.365 s	0.313 s	-0.052 s	3.78 MiB	3.83 MiB	+ 49.63 KiB
/wp-admin/post-new.php	0.853 s	0.731 s	-0.122 s	6.3 MiB	6.48 MiB	+ 181.38 KiB
/wp-admin/upload.php	0.662 s	0.489 s	-0.173 s	3.74 MiB	3.77 MiB	+ 32.23 KiB
/wp-admin/options-writing.php	0.313 s	0.275 s	-0.038 s	3.71 MiB	3.74 MiB	+ 36.22 KiB
/wp-admin/media-new.php	0.495 s	0.350 s	-0.145 s	3.7 MiB	3.74 MiB	+ 44.41 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.437 s	0.283 s	-0.154 s	3.71 MiB	3.77 MiB	+ 55.09 KiB
/wp-admin/post-new.php?post_type=page	0.692 s	0.679 s	-0.013 s	6.29 MiB	6.46 MiB	+ 174.87 KiB
/wp-admin/options-discussion.php	0.467 s	0.385 s	-0.082 s	3.71 MiB	3.74 MiB	+ 32.72 KiB
/wp-admin/edit-comments.php	0.388 s	0.342 s	-0.046 s	3.73 MiB	3.76 MiB	+ 32.22 KiB
/	0.307 s	0.187 s	-0.120 s	4.1 MiB	4.15 MiB	+ 52.36 KiB
Average	0.488 s	0.397 s	-0.091 s	4.23 MiB	4.29 MiB	+ 64.3 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

JavaScript

CSS

Language		%	Lines of code	Comment lines	Files
	PHP	52.2%	4,514	2,069	30
	JavaScript	31.3%	2,708	597	6
	CSS	15.2%	1,316	112	2
	Markdown	1.3%	113	0	1
	SVG	0.0%	1	0	1
Total			8,652	2,778	40

PHP Code Analysis | More results »

Lines of code	4,201
Total complexity	831
Median class complexity	16.5
Median method complexity	2.0
Most complex class	ClickSyncr\Metrics\Core\Collector
Most complex function	cmatic_subscribe_submission()

Classes	16
Methods	124
Functions	76

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.

Options `wp_options` 1

cmatic

PHP Error Log

The log file is empty.

Connect Contact Form 7 and Mailchimp 0.9.44