Report - Connect Contact Form 7 and Mailchimp 0.9.40

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 00:39:54 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: 63.86 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-lite-panel
Requested URL	/wp-admin/plugins.php?action=activate&plugin=contact-form-7-mailchimp-extension%2Fchimpmatic-lite.php&plugin_status=all&paged=1&s&_wpnonce=e3a096558d
Aspect	after-activation
HTTP status	403
Load time	0.626 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	0.312 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	0.502 s	0.451 s	-0.051 s	3.77 MiB	3.79 MiB	+ 15.78 KiB
/wp-admin/edit.php	0.450 s	0.369 s	-0.081 s	3.78 MiB	3.83 MiB	+ 49.19 KiB
/wp-admin/post-new.php	1.081 s	0.844 s	-0.237 s	6.3 MiB	6.48 MiB	+ 180.94 KiB
/wp-admin/upload.php	0.533 s	0.592 s	+0.059 s	3.74 MiB	3.77 MiB	+ 31.78 KiB
/wp-admin/options-writing.php	0.410 s	0.399 s	-0.011 s	3.71 MiB	3.74 MiB	+ 35.77 KiB
/wp-admin/media-new.php	0.616 s	0.445 s	-0.171 s	3.7 MiB	3.74 MiB	+ 43.97 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.407 s	0.394 s	-0.013 s	3.71 MiB	3.77 MiB	+ 54.64 KiB
/wp-admin/post-new.php?post_type=page	0.839 s	0.787 s	-0.052 s	6.29 MiB	6.46 MiB	+ 174.42 KiB
/wp-admin/options-discussion.php	0.433 s	0.563 s	+0.130 s	3.71 MiB	3.74 MiB	+ 32.27 KiB
/wp-admin/edit-comments.php	0.431 s	0.461 s	+0.030 s	3.73 MiB	3.76 MiB	+ 31.77 KiB
/	0.418 s	0.292 s	-0.126 s	4.1 MiB	4.15 MiB	+ 51.91 KiB
Average	0.556 s	0.509 s	-0.048 s	4.23 MiB	4.29 MiB	+ 63.86 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	53.2%	4,115	1,649	25
	JavaScript	30.3%	2,342	442	6
	CSS	15.1%	1,167	120	2
	Markdown	1.5%	113	0	1
	SVG	0.0%	1	0	1
Total			7,738	2,211	35

PHP Code Analysis | More results »

Lines of code	3,812
Total complexity	739
Median class complexity	17.0
Median method complexity	2.0
Most complex class	ClickSyncr\Metrics\Core\Collector
Most complex function	cmatic_subscribe_submission()

Classes	11
Methods	98
Functions	74

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 0.9.40