Report - Connect Contact Form 7 and Mailchimp 0.9.54

Does "Connect Contact Form 7 and Mailchimp" work with WordPress 6.9 and PHP 8.1.12? A smoke test was performed on 2026-01-02 02:02:58 UTC.

Summary

Errors

1	Unrecognized messages in the PHP error log
	No JavaScript exceptions
1	Page failed to load 1 403 Forbidden
	No resource errors

Performance

Memory usage: 89.92 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=6640194188
Aspect	after-activation
HTTP status	403
Load time	2.233 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	0.177 s
Memory usage	4.19 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.392 s	0.365 s	-0.027 s	3.78 MiB	3.82 MiB	+ 42.34 KiB
/wp-admin/edit.php	0.370 s	0.323 s	-0.047 s	3.78 MiB	3.86 MiB	+ 82.91 KiB
/wp-admin/post-new.php	0.879 s	0.826 s	-0.053 s	6.31 MiB	6.54 MiB	+ 243.15 KiB
/wp-admin/upload.php	0.495 s	0.523 s	+0.028 s	3.74 MiB	3.79 MiB	+ 57.52 KiB
/wp-admin/options-writing.php	0.343 s	0.335 s	-0.008 s	3.71 MiB	3.77 MiB	+ 61.03 KiB
/wp-admin/media-new.php	0.489 s	0.370 s	-0.119 s	3.7 MiB	3.77 MiB	+ 69.23 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.313 s	0.316 s	+0.003 s	3.72 MiB	3.79 MiB	+ 73.95 KiB
/wp-admin/post-new.php?post_type=page	0.679 s	0.664 s	-0.015 s	6.3 MiB	6.47 MiB	+ 172.64 KiB
/wp-admin/options-discussion.php	0.377 s	0.390 s	+0.013 s	3.71 MiB	3.77 MiB	+ 57.52 KiB
/wp-admin/edit-comments.php	0.315 s	0.349 s	+0.034 s	3.73 MiB	3.79 MiB	+ 56.58 KiB
/	0.459 s	0.204 s	-0.255 s	4.12 MiB	4.19 MiB	+ 72.23 KiB
Average	0.465 s	0.424 s	-0.041 s	4.24 MiB	4.32 MiB	+ 89.92 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	61.0%	5,346	1,424	34
	JavaScript	23.8%	2,083	59	5
	CSS	15.2%	1,331	10	2
	SVG	0.0%	1	0	1
Total			8,761	1,493	42

PHP Code Analysis | More results »

Lines of code	5,021
Total complexity	1,042
Median class complexity	23.0
Median method complexity	2.0
Most complex class	Cmatic\Metrics\Core\Collector
Most complex function	Cmatic\Metrics\Core\Collector::collect_forms()

Classes	19
Methods	178
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

User Metadata `wp_usermeta` 1

wp_cmatic_notifications

PHP Error Log 1 lines

[02-Jan-2026 02:03:19 UTC] [ChimpMatic Lite] Added plugin_slug to install section.

Connect Contact Form 7 and Mailchimp 0.9.54