Report - MailChimp for WordPress 4.2.1

Does MailChimp for WordPress work with WordPress 4.9.6 and PHP 7.0.16? A smoke test was performed on 2018-05-17 19:58:21 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: 265.52 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	4.9.6
PHP version	7.0.16
MySQL version	5.7.17
PHP memory limit	256M

Plugin Info

Last updated	2025-07-23T11:38:00+00:00
Active installs	2,000,000+
WordPress.org page	https://wordpress.org/plugins/mailchimp-for-wp/
Badges	Get badge code

Pages 8

Plugins ‹ Test site — WordPress

URL	/wp-admin/plugins.php?activate=true&plugin_status=all&paged=1&s=
Requested URL	/wp-admin/plugins.php?action=activate&plugin=mailchimp-for-wp%2Fmailchimp-for-wp.php&plugin_status=all&paged=1&s&_wpnonce=b6033b431c
Aspect	after-activation
HTTP status	200 OK
Load time	0.141 s
Memory usage	3.37 MiB
JS errors	None
Resource errors	None

MailChimp for WP

URL	/wp-admin/admin.php?page=mailchimp-for-wp
Aspect	menu-item
HTTP status	200 OK
Load time	0.033 s
Memory usage	3.37 MiB
JS errors	None
Resource errors	None

MailChimp for WP → Form

URL	/wp-admin/admin.php?page=mailchimp-for-wp-forms&view=add-form
Requested URL	/wp-admin/admin.php?page=mailchimp-for-wp-forms
Aspect	menu-item
HTTP status	200 OK
Load time	0.100 s
Memory usage	3.46 MiB
JS errors	None
Resource errors	None

MailChimp for WP → Integrations

URL	/wp-admin/admin.php?page=mailchimp-for-wp-integrations
Aspect	menu-item
HTTP status	200 OK
Load time	0.080 s
Memory usage	3.4 MiB
JS errors	None
Resource errors	None

MailChimp for WP → Other

URL	/wp-admin/admin.php?page=mailchimp-for-wp-other
Aspect	menu-item
HTTP status	200 OK
Load time	0.042 s
Memory usage	3.4 MiB
JS errors	None
Resource errors	None

MailChimp for WP → Add-ons

URL	/wp-admin/admin.php?page=mailchimp-for-wp-extensions
Aspect	menu-item
HTTP status	200 OK
Load time	0.076 s
Memory usage	3.3 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200 OK
Load time	0.111 s
Memory usage	2.91 MiB
JS errors	None
Resource errors	None

Widgets ‹ Test site — WordPress

URL	/wp-admin/widgets.php
Aspect	new-sidebar-widgets
HTTP status	200 OK
Load time	0.094 s
Memory usage	3.33 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.165 s	0.125 s	-0.040 s	3.09 MiB	3.34 MiB	+ 254.76 KiB
/wp-admin/edit.php	0.120 s	0.123 s	+0.003 s	3.12 MiB	3.37 MiB	+ 258.81 KiB
/wp-admin/post-new.php	0.164 s	0.193 s	+0.029 s	3.19 MiB	3.44 MiB	+ 261.27 KiB
/wp-admin/upload.php	0.093 s	0.123 s	+0.030 s	2.96 MiB	3.2 MiB	+ 254.02 KiB
/wp-admin/options-writing.php	0.082 s	0.108 s	+0.026 s	2.95 MiB	3.25 MiB	+ 308.18 KiB
/wp-admin/media-new.php	0.043 s	0.069 s	+0.026 s	2.94 MiB	3.19 MiB	+ 254.02 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.080 s	0.081 s	+0.001 s	2.98 MiB	3.29 MiB	+ 318.02 KiB
/wp-admin/post-new.php?post_type=page	0.173 s	0.164 s	-0.009 s	3.19 MiB	3.44 MiB	+ 254.02 KiB
/wp-admin/options-discussion.php	0.080 s	0.080 s	+0.000 s	2.94 MiB	3.19 MiB	+ 254.33 KiB
/wp-admin/edit-comments.php	0.092 s	0.108 s	+0.016 s	2.98 MiB	3.29 MiB	+ 318.05 KiB
/	0.085 s	0.125 s	+0.040 s	2.73 MiB	2.91 MiB	+ 185.22 KiB
Average	0.107 s	0.118 s	+0.011 s	3.01 MiB	3.27 MiB	+ 265.52 KiB

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` 4

mc4wp
mc4wp_flash_messages
mc4wp_version
widget_mc4wp_form_widget

Custom Post Types 1

ID	Name
mc4wp-form	MailChimp Sign-up Forms

Sidebar Widgets 1

ID	Name
mc4wp_form_widget	MailChimp Sign-Up Form

PHP Error Log

The log file is empty.

MailChimp for WordPress 4.2.1