Report - Connect Contact Form 7 and Mailchimp 0.5.55

Does "Contact Form 7 Extension For Mailchimp" work with WordPress 5.9 and PHP 7.4.8? A smoke test was performed on 2022-01-26 00:53:32 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: 264.93 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.046 seconds
The average page load time increased by this amount after activating the plugin.

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=0d018bb883
Aspect	after-activation
HTTP status	200
Load time	1.321 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	0.405 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	2.410 s
Memory usage	5.59 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	0.248 s
Memory usage	3.69 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.306 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	0.338 s	0.427 s	+0.089 s	3.36 MiB	3.59 MiB	+ 236.09 KiB
/wp-admin/edit.php	0.177 s	0.217 s	+0.040 s	3.39 MiB	3.69 MiB	+ 302.66 KiB
/wp-admin/post-new.php	1.021 s	1.235 s	+0.214 s	6.14 MiB	6.34 MiB	+ 203.4 KiB
/wp-admin/upload.php	0.358 s	0.371 s	+0.013 s	3.24 MiB	3.54 MiB	+ 307.3 KiB
/wp-admin/options-writing.php	0.299 s	0.181 s	-0.118 s	3.24 MiB	3.52 MiB	+ 291.16 KiB
/wp-admin/media-new.php	0.306 s	0.198 s	-0.108 s	3.22 MiB	3.52 MiB	+ 307.47 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.178 s	0.226 s	+0.048 s	3.25 MiB	3.55 MiB	+ 308.41 KiB
/wp-admin/post-new.php?post_type=page	0.905 s	1.166 s	+0.261 s	6.14 MiB	6.33 MiB	+ 195.05 KiB
/wp-admin/options-discussion.php	0.233 s	0.295 s	+0.062 s	3.22 MiB	3.52 MiB	+ 307.8 KiB
/wp-admin/edit-comments.php	0.210 s	0.231 s	+0.021 s	3.26 MiB	3.56 MiB	+ 299.3 KiB
/	0.260 s	0.241 s	-0.019 s	3.4 MiB	3.55 MiB	+ 155.64 KiB
Average	0.390 s	0.435 s	+0.046 s	3.81 MiB	4.07 MiB	+ 264.93 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 0.5.55