Report - Connect Contact Form 7 and Mailchimp 0.5.57

Does "Contact Form 7 Extension For Mailchimp" work with WordPress 5.9 and PHP 7.4.8? A smoke test was performed on 2022-02-15 01:57:49 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: 286.28 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	5.9
PHP version	7.4.8
MySQL version	8.0.21
PHP memory limit	256M

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=f34be78cca
Aspect	after-activation
HTTP status	200
Load time	0.829 s
Memory usage	4.66 MiB
JS errors	None
Resource errors	None

Contact

URL	/wp-admin/admin.php?page=wpcf7
Aspect	menu-item
HTTP status	200
Load time	0.270 s
Memory usage	5.47 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	1.570 s
Memory usage	5.62 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	0.233 s
Memory usage	3.74 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.216 s
Memory usage	3.56 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.310 s	0.282 s	-0.028 s	3.36 MiB	3.6 MiB	+ 247.06 KiB
/wp-admin/edit.php	0.147 s	0.179 s	+0.032 s	3.39 MiB	3.71 MiB	+ 319.13 KiB
/wp-admin/post-new.php	0.836 s	1.009 s	+0.173 s	6.14 MiB	6.36 MiB	+ 220.6 KiB
/wp-admin/upload.php	0.524 s	0.341 s	-0.183 s	3.24 MiB	3.56 MiB	+ 325.75 KiB
/wp-admin/options-writing.php	0.265 s	0.133 s	-0.132 s	3.24 MiB	3.54 MiB	+ 308.36 KiB
/wp-admin/media-new.php	0.254 s	0.169 s	-0.085 s	3.22 MiB	3.54 MiB	+ 326.55 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.172 s	0.192 s	+0.020 s	3.25 MiB	3.57 MiB	+ 331.11 KiB
/wp-admin/post-new.php?post_type=page	0.992 s	0.917 s	-0.075 s	6.14 MiB	6.35 MiB	+ 212.25 KiB
/wp-admin/options-discussion.php	0.195 s	0.277 s	+0.082 s	3.22 MiB	3.54 MiB	+ 326.88 KiB
/wp-admin/edit-comments.php	0.191 s	0.196 s	+0.005 s	3.26 MiB	3.57 MiB	+ 316.51 KiB
/	0.205 s	0.193 s	-0.012 s	3.35 MiB	3.56 MiB	+ 214.84 KiB
Average	0.372 s	0.353 s	-0.018 s	3.8 MiB	4.08 MiB	+ 286.28 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	71.8%	1,983	342	16
	CSS	22.5%	621	71	2
	JavaScript	5.7%	157	31	1
	SVG	0.0%	1	0	1
Total			2,762	444	20

PHP Code Analysis | More results »

Lines of code	1,818
Total complexity	320
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	78

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 0.5.57