Report - Connect Contact Form 7 and Mailchimp 0.5.70

Does "Contact Form 7 Extension For Mailchimp" work with WordPress 6.4.2 and PHP 8.1.12? A smoke test was performed on 2023-12-06 22:55:31 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: 268.71 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	6.4.2
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 5

Plugins ‹ Test site — WordPress

URL	/wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL	/wp-admin/plugins.php?action=activate&plugin=contact-form-7-mailchimp-extension%2Fchimpmatic-lite.php&plugin_status=all&paged=1&s&_wpnonce=8caccaad3d
Aspect	after-activation
HTTP status	200
Load time	0.987 s
Memory usage	5.07 MiB
JS errors	None
Resource errors	None

Contact

URL	/wp-admin/admin.php?page=wpcf7
Aspect	menu-item
HTTP status	200
Load time	0.313 s
Memory usage	3.93 MiB
JS errors	None
Resource errors	None

Contact → Add New

URL	/wp-admin/admin.php?page=wpcf7-new
Aspect	menu-item
HTTP status	200
Load time	0.522 s
Memory usage	3.71 MiB
JS errors	None
Resource errors	None

Contact → Integration

URL	/wp-admin/admin.php?page=wpcf7-integration
Aspect	menu-item
HTTP status	200
Load time	0.201 s
Memory usage	3.57 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.187 s
Memory usage	3.51 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.365 s	0.268 s	-0.097 s	3.38 MiB	3.66 MiB	+ 285.6 KiB
/wp-admin/edit.php	0.209 s	0.374 s	+0.165 s	3.41 MiB	3.75 MiB	+ 350.97 KiB
/wp-admin/post-new.php	0.857 s	0.682 s	-0.175 s	5.46 MiB	5.71 MiB	+ 260.09 KiB
/wp-admin/upload.php	0.721 s	0.314 s	-0.407 s	3.32 MiB	3.59 MiB	+ 268.27 KiB
/wp-admin/options-writing.php	0.211 s	0.190 s	-0.021 s	3.32 MiB	3.58 MiB	+ 265.13 KiB
/wp-admin/media-new.php	0.307 s	0.231 s	-0.076 s	3.29 MiB	3.56 MiB	+ 274.73 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.208 s	0.196 s	-0.012 s	3.31 MiB	3.6 MiB	+ 289.3 KiB
/wp-admin/post-new.php?post_type=page	0.597 s	0.690 s	+0.093 s	5.45 MiB	5.7 MiB	+ 259.74 KiB
/wp-admin/options-discussion.php	0.308 s	0.273 s	-0.035 s	3.3 MiB	3.57 MiB	+ 270.59 KiB
/wp-admin/edit-comments.php	0.230 s	0.223 s	-0.007 s	3.34 MiB	3.6 MiB	+ 271.92 KiB
/	0.274 s	0.229 s	-0.045 s	3.36 MiB	3.51 MiB	+ 159.48 KiB
Average	0.390 s	0.334 s	-0.056 s	3.72 MiB	3.98 MiB	+ 268.71 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

CSS

Language		%	Lines of code	Comment lines	Files
	PHP	69.7%	2,338	551	20
	CSS	22.7%	763	76	2
	JavaScript	7.5%	252	57	2
	SVG	0.0%	1	0	1
Total			3,354	684	25

PHP Code Analysis | More results »

Lines of code	2,291
Total complexity	334
Median class complexity	4.5
Median method complexity	1.0
Most complex class	chimp_db_log
Most complex function	wpcf7_mch_subscribe_remote()

Classes	2
Methods	4
Functions	92

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` 9

cf7_mch_
chimpmatic-update
mce_conten_panel_lateralbanner
mce_conten_panel_master
mce_conten_panel_welcome
mce_conten_tittle_master
mce_loyalty
mce_show_update_news
wpcf7

Custom Post Types 1

ID	Name
wpcf7_contact_form	Contact Forms

PHP Error Log

The log file is empty.

Connect Contact Form 7 and Mailchimp 0.5.70