Report - Connect Contact Form 7 and Mailchimp 0.5.56

Does "Contact Form 7 Extension For Mailchimp" work with WordPress 5.9 and PHP 7.4.8? A smoke test was performed on 2022-02-03 00:16:08 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: 269.32 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=f1bd1eeed1
Aspect	after-activation
HTTP status	200
Load time	1.800 s
Memory usage	4.72 MiB
JS errors	None
Resource errors	None

Contact

URL	/wp-admin/admin.php?page=wpcf7
Aspect	menu-item
HTTP status	200
Load time	0.389 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	1.582 s
Memory usage	3.89 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	0.241 s
Memory usage	3.53 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.280 s
Memory usage	3.55 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.415 s	0.401 s	-0.014 s	3.36 MiB	3.59 MiB	+ 236.09 KiB
/wp-admin/edit.php	0.189 s	0.232 s	+0.043 s	3.39 MiB	3.69 MiB	+ 302.66 KiB
/wp-admin/post-new.php	1.128 s	1.328 s	+0.200 s	6.14 MiB	6.34 MiB	+ 203.4 KiB
/wp-admin/upload.php	0.514 s	0.421 s	-0.093 s	3.24 MiB	3.54 MiB	+ 307.3 KiB
/wp-admin/options-writing.php	0.300 s	0.167 s	-0.133 s	3.24 MiB	3.52 MiB	+ 291.16 KiB
/wp-admin/media-new.php	0.246 s	0.226 s	-0.020 s	3.22 MiB	3.52 MiB	+ 307.47 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.189 s	0.252 s	+0.063 s	3.25 MiB	3.55 MiB	+ 308.41 KiB
/wp-admin/post-new.php?post_type=page	1.122 s	1.232 s	+0.110 s	6.14 MiB	6.33 MiB	+ 195.05 KiB
/wp-admin/options-discussion.php	0.236 s	0.306 s	+0.070 s	3.22 MiB	3.52 MiB	+ 307.8 KiB
/wp-admin/edit-comments.php	0.241 s	0.262 s	+0.021 s	3.26 MiB	3.56 MiB	+ 299.3 KiB
/	0.298 s	0.246 s	-0.052 s	3.35 MiB	3.55 MiB	+ 203.87 KiB
Average	0.443 s	0.461 s	+0.018 s	3.8 MiB	4.07 MiB	+ 269.32 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 0.5.56