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Newsletter 9.1.8

Does Newsletter work with WordPress 6.9.4 and PHP 8.1.12? A smoke test was performed on .

Summary

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

Memory usage: 379.26 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 version6.9.4
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=26ef694012
Aspect after-activation
HTTP status 200
Load time 1.562 s
Memory usage 4.28 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 0.817 s
Memory usage 4.2 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 0.948 s
Memory usage 4.17 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 0.551 s
Memory usage 4.19 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 0.497 s
Memory usage 4.12 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 0.458 s
Memory usage 4.15 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 0.518 s
Memory usage 4.12 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 0.592 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 0.798 s
Memory usage 4.13 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 0.678 s
Memory usage 4.12 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 0.528 s
Memory usage 4.12 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 0.264 s
Memory usage 4.23 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 1.002 s
Memory usage 6.48 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.441 s0.447 s+0.006 s3.78 MiB4.16 MiB+ 393.84 KiB
/wp-admin/edit.php0.363 s0.330 s-0.033 s3.78 MiB4.21 MiB+ 439.07 KiB
/wp-admin/post-new.php0.918 s0.873 s-0.045 s6.31 MiB6.76 MiB+ 459.17 KiB
/wp-admin/upload.php0.497 s0.558 s+0.061 s3.74 MiB4.11 MiB+ 380.84 KiB
/wp-admin/options-writing.php0.347 s0.375 s+0.028 s3.71 MiB4.08 MiB+ 379.32 KiB
/wp-admin/media-new.php0.560 s0.315 s-0.245 s3.7 MiB4.08 MiB+ 387.52 KiB
/wp-admin/edit-tags.php?taxonomy=category0.348 s0.311 s-0.037 s3.72 MiB4.11 MiB+ 398.19 KiB
/wp-admin/post-new.php?post_type=page0.733 s0.687 s-0.046 s6.3 MiB6.74 MiB+ 452.66 KiB
/wp-admin/options-discussion.php0.340 s0.487 s+0.147 s3.71 MiB4.08 MiB+ 375.82 KiB
/wp-admin/edit-comments.php0.346 s0.442 s+0.096 s3.73 MiB4.11 MiB+ 380.82 KiB
/0.315 s0.194 s-0.121 s4.11 MiB4.23 MiB+ 124.67 KiB
Average 0.473 s0.456 s-0.017 s4.24 MiB4.61 MiB+ 379.26 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
PHP74.1%31,2414,088232
CSS13.4%5,64857223
JSON7.0%2,950021
JavaScript5.0%2,1051897
HTML0.5%200143
Total 42,144 4,863 286

PHP Code Analysis | More results »

Lines of code 18,876
Total complexity 3,669
Median class complexity 24.5
Median method complexity 2.0
Most complex class NewsletterControls
Most complex function NewsletterUpgrade::run()
Classes 74
Methods 1,085
Functions 37

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 1 lines

[23-Mar-2026 12:50:29 UTC] PHP Warning:  Undefined array key "search_page" in /wp-content/plugins/newsletter/users/index.php on line 112
See also: All tests for this plugin, How to Hide Newsletter Admin Menus