Stephen Harris

This plug-in will only work on a Multisite running WordPress 3.9+.
This plug-in allows an Network Admin to create admin notices that appear on the top of all admin screens of the 
network’s sites. This notices are styled identically to the “normal” WordPress notices that you might see (WordPress 
updates, “post published” messages etc). Additionally each notice has a “dismiss” link which allows the user to 
instantly dismiss the notice.
Once a user dismisses a notice there will never again see that notice, on any of the network’s site.
Health Warning: The notice messages are considered HTML! A “small” inline tinyMCE editor will be used in a 
future update. But for the time being be aware that when you create/edit notices you are editing HTML (think WordPress 
‘text’ tab on the editor).
Before using the support forums, please read the FAQ. Thank you!

Multisite Admin Notices

Allows a network admin to create admin notices for blog admins.

zichemak

Dash Broom keeps wp-admin tidy. Hide or toggle core and popular plugin notices with one click, grouped by type with count badges. Preferences are saved per user, so each admin can choose what to sweep away.
What it hides/toggles 
– Core: Error, Warning, Success, Info 
– Plugin notices: WooCommerce, Elementor, Yoast, Jetpack 
– WordPress Welcome Panel 
– “Other” (misc. <code>.notice</code> elements we auto-classify)
Highlights 
– One-click badges per type (show counts; click to slide open/closed) 
– Per-user saved settings (no code) 
– Early CSS prevents “flash” of notices before JS runs 
– Respects page layout: only targets notices in the main admin content
Use cases 
– Hide admin nags during client demos 
– Keep stores (WooCommerce) and builders (Elementor/Yoast/Jetpack) quiet 
– Focus on what matters, then reveal notices when needed
Accessibility 
– Keyboard-operable toggles and ARIA attributes for the settings panel

Dash Broom

Hide or toggle WordPress admin notices and the Welcome panel. Clean up your dashboard with badges, per-type filters, and per-user preferences.

Multisite Admin Notices vs Dash Broom