Report - Connect Contact Form 7 and Mailchimp 0.5.43

Does "Contact Form 7 Extension For Mailchimp" work with WordPress 5.8 and PHP 7.4.8? A smoke test was performed on 2021-08-06 00:10:57 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: 225.02 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	5.8
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=7f2cffee5c
Aspect	after-activation
HTTP status	200
Load time	1.156 s
Memory usage	4.37 MiB
JS errors	None
Resource errors	None

Contact

URL	/wp-admin/admin.php?page=wpcf7
Aspect	menu-item
HTTP status	200
Load time	0.273 s
Memory usage	3.45 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	2.168 s
Memory usage	3.37 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	0.185 s
Memory usage	3.21 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.241 s
Memory usage	3.15 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.281 s	0.242 s	-0.039 s	3.08 MiB	3.35 MiB	+ 273.45 KiB
/wp-admin/edit.php	0.162 s	0.173 s	+0.011 s	3.11 MiB	3.38 MiB	+ 276.45 KiB
/wp-admin/post-new.php	0.725 s	1.075 s	+0.350 s	5.27 MiB	5.45 MiB	+ 189.7 KiB
/wp-admin/upload.php	0.612 s	0.318 s	-0.294 s	3.03 MiB	3.23 MiB	+ 208.66 KiB
/wp-admin/options-writing.php	0.180 s	0.218 s	+0.038 s	3.02 MiB	3.21 MiB	+ 192.64 KiB
/wp-admin/media-new.php	0.340 s	0.165 s	-0.175 s	3.01 MiB	3.21 MiB	+ 208.83 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.156 s	0.176 s	+0.020 s	3.04 MiB	3.24 MiB	+ 209.77 KiB
/wp-admin/post-new.php?post_type=page	0.724 s	0.953 s	+0.229 s	5.26 MiB	5.44 MiB	+ 189.35 KiB
/wp-admin/options-discussion.php	0.383 s	0.286 s	-0.097 s	3 MiB	3.21 MiB	+ 209.16 KiB
/wp-admin/edit-comments.php	0.206 s	0.288 s	+0.082 s	3.04 MiB	3.31 MiB	+ 272.66 KiB
/	0.247 s	0.257 s	+0.010 s	2.91 MiB	3.15 MiB	+ 244.52 KiB
Average	0.365 s	0.377 s	+0.012 s	3.43 MiB	3.65 MiB	+ 225.02 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	72.5%	1,898	339	16
	CSS	21.4%	561	71	2
	JavaScript	6.0%	157	31	1
	SVG	0.0%	1	0	1
Total			2,617	441	20

PHP Code Analysis | More results »

Lines of code	1,715
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 0.5.43