nicksmit

AdminNotes allows administrators and editors to add formatted notes to posts and pages. These notes can serve as reminders, tasks, or recommendations for content editors. Additionally, when enabled, users are notified to read these admin notes before editing the content.
Features: 
– Add formatted notes using a rich text editor in both Classic and Gutenberg editors. 
– Display a notification message to users when editing a post or page if admin notes are present. 
– Option to enable or disable the notification on a per-post/page basis.

AdminNotes

Adds an admin notes block to post and page editing screens with formatted text support and user notifications.

minhlaobao

WordPress admin note. 
Thanks you for using plugin.
Welcome to my site: http://begood.vn 
<a href="http://begood.vn" rel="nofollow ugc">Vietsub</a>

Admin Notes

Create notes for admin, one can assign to certain members easily.

AdminNotes vs Admin Notes