Newsletter 9.0.9

Does Newsletter work with WordPress 6.9 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
1PHP warnings
4PHP deprecation warnings
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 375.76 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 version6.9
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 200,000+
WordPress.org page https://wordpress.org/plugins/newsletter/
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Pages 13

Welcome ‹ Test site — WordPress

Page screenshot: Welcome ‹ Test site — WordPress
URL /wp-admin/admin.php?page=newsletter_main_welcome
Requested URL /wp-admin/plugins.php?action=activate&plugin=newsletter%2Fplugin.php&plugin_status=all&paged=1&s&_wpnonce=3d5880493c
Aspect after-activation
HTTP status 200
Load time 1.414 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Newsletter

Page screenshot: Newsletter
URL /wp-admin/admin.php?page=newsletter_main_index
Aspect menu-item
HTTP status 200
Load time 0.873 s
Memory usage 4.19 MiB
JS errors None
Resource errors None

Newsletter → Subscription

Page screenshot: Newsletter → Subscription
URL /wp-admin/admin.php?page=newsletter_subscription_options
Aspect menu-item
HTTP status 200
Load time 1.023 s
Memory usage 4.16 MiB
JS errors None
Resource errors None

Newsletter → Forms

Page screenshot: Newsletter → Forms
URL /wp-admin/admin.php?page=newsletter_subscription_sources
Aspect menu-item
HTTP status 200
Load time 0.411 s
Memory usage 4.18 MiB
JS errors None
Resource errors None

Newsletter → Newsletters

Page screenshot: Newsletter → Newsletters
URL /wp-admin/admin.php?page=newsletter_emails_index
Aspect menu-item
HTTP status 200
Load time 0.413 s
Memory usage 4.11 MiB
JS errors None
Resource errors None

Newsletter → Subscribers

Page screenshot: Newsletter → Subscribers
URL /wp-admin/admin.php?page=newsletter_users_index
Aspect menu-item
HTTP status 200
Load time 0.438 s
Memory usage 4.14 MiB
JS errors None
Resource errors None

Newsletter → Lists

Page screenshot: Newsletter → Lists
URL /wp-admin/admin.php?page=newsletter_subscription_lists
Aspect menu-item
HTTP status 200
Load time 0.517 s
Memory usage 4.11 MiB
JS errors None
Resource errors None

Newsletter → Settings

Page screenshot: Newsletter → Settings
URL /wp-admin/admin.php?page=newsletter_main_main
Aspect menu-item
HTTP status 200
Load time 0.556 s
Memory usage 4.17 MiB
JS errors None
Resource errors None

Newsletter → Addons

Page screenshot: Newsletter → Addons
URL /wp-admin/admin.php?page=newsletter_main_extensions
Aspect menu-item
HTTP status 200
Load time 0.873 s
Memory usage 4.12 MiB
JS errors None
Resource errors None

Newsletter → Automated Pro

Page screenshot: Newsletter → Automated Pro
URL /wp-admin/admin.php?page=newsletter_main_automated
Aspect menu-item
HTTP status 200
Load time 0.559 s
Memory usage 4.11 MiB
JS errors None
Resource errors None

Newsletter → Autoresponder Pro

Page screenshot: Newsletter → Autoresponder Pro
URL /wp-admin/admin.php?page=newsletter_main_autoresponder
Aspect menu-item
HTTP status 200
Load time 0.492 s
Memory usage 4.11 MiB
JS errors None
Resource errors None

Test site – Just another WordPress site

Page screenshot: Test site – Just another WordPress site
URL /
Aspect front-page
HTTP status 200
Load time 0.251 s
Memory usage 4.22 MiB
JS errors None
Resource errors None

Widgets ‹ Test site — WordPress

Page screenshot: Widgets ‹ Test site — WordPress
URL /wp-admin/widgets.php
Aspect new-sidebar-widgets
HTTP status 200
Load time 1.048 s
Memory usage 6.47 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.362 s0.416 s+0.054 s3.77 MiB4.15 MiB+ 390.34 KiB
/wp-admin/edit.php0.350 s0.319 s-0.031 s3.78 MiB4.2 MiB+ 435.57 KiB
/wp-admin/post-new.php0.835 s0.829 s-0.006 s6.3 MiB6.75 MiB+ 455.67 KiB
/wp-admin/upload.php0.622 s0.458 s-0.164 s3.73 MiB4.1 MiB+ 377.33 KiB
/wp-admin/options-writing.php0.321 s0.343 s+0.022 s3.71 MiB4.07 MiB+ 375.83 KiB
/wp-admin/media-new.php0.497 s0.298 s-0.199 s3.7 MiB4.07 MiB+ 384.02 KiB
/wp-admin/edit-tags.php?taxonomy=category0.301 s0.283 s-0.018 s3.71 MiB4.1 MiB+ 394.69 KiB
/wp-admin/post-new.php?post_type=page0.818 s0.655 s-0.163 s6.29 MiB6.73 MiB+ 449.16 KiB
/wp-admin/options-discussion.php0.373 s0.442 s+0.069 s3.71 MiB4.07 MiB+ 372.32 KiB
/wp-admin/edit-comments.php0.315 s0.334 s+0.019 s3.73 MiB4.1 MiB+ 377.32 KiB
/0.274 s0.188 s-0.086 s4.1 MiB4.22 MiB+ 121.17 KiB
Average 0.461 s0.415 s-0.046 s4.23 MiB4.6 MiB+ 375.76 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
PHP74.0%31,0474,072232
CSS13.5%5,64455523
JSON7.0%2,950021
JavaScript5.0%2,0971817
HTML0.5%200143
Total 41,938 4,822 286

PHP Code Analysis | More results »

Lines of code 18,072
Total complexity 3,638
Median class complexity 24.5
Median method complexity 2.0
Most complex class NewsletterControls
Most complex function NewsletterUpgrade::run()
Classes 74
Methods 1,083
Functions 36

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.

Database Tables 7

Options wp_options 15

Sidebar Widgets 2

ID Name
newsletterwidgetNewsletter
newsletterwidgetminimalNewsletter Minimal

PHP Error Log 5 lines

[02-Dec-2025 21:56:30 UTC] PHP Warning:  Undefined array key "search_page" in /wp-content/plugins/newsletter/users/index.php on line 112
[02-Dec-2025 21:56:38 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:56:38 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:56:47 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 21:56:47 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
See also: All tests for this plugin, How to Hide Newsletter Admin Menus