tex0gen

Display custom admin notices in your WordPress admin dashboard with native WordPress styling. 
Choose between success, warning, error or neutral styles.
This is a super lightweight plugin that is only loaded on your admin dashboard.

Custom Admin Notice

Does what it says on the tin

Custom admin notices for your WordPress admin dashboard. Display a custom notice to all users in your WordPress dashboard.

Freemius

Reza Hossain Farukh

RZCNB Notice Board adds a Notices custom post type so you can create announcements like normal WordPress posts (title, content, excerpt, featured image). You then place a shortcode on any page to show a responsive grid: icons, excerpts, dates, pagination, or load more.
Here are the Demos:
<a href="https://demos.orviansoft.com/notice-board-demos/" rel="nofollow ugc">View live Notice Board demos</a>
Support:
<a href="https://orviansoft.com/get-support/" rel="nofollow ugc">Get support at Orvian Soft</a>
<h4>What you get (free)</h4>
<ul>
<li>Custom post type <code>rzcnb_notice_board</code> with optional single template under <code>templates/</code>.</li>
<li>Hierarchical Notice categories taxonomy (<code>rzcnb_notice_category</code>).</li>
<li>Shortcode builder under the notices admin menu: create multiple saved configurations (stored in the <code>rzcnb_custom_shortcodes</code> option).</li>
<li>Shortcode: <code>[rzcnb_notice_board id="X"]</code> — X is the id of a saved configuration listed on All Shortcodes (you create configs with Create Shortcode; nothing is auto-created on install).</li>
<li>Grid layout: separate column counts for desktop, tablet, and mobile.</li>
<li>Style presets plus detailed styling (colors, padding, border radius, typography for title/excerpt).</li>
<li>Pagination or AJAX load more (mutually exclusive; configurable batch sizes per breakpoint).</li>
<li>Optional sort order (orderby whitelist + ASC/DESC).</li>
</ul>
<h4>Premium / Freemius</h4>
Paid tiers (when licensed via Freemius) can unlock additional behaviour such as advanced layout locks, scheduling, role-based visibility, and email notifications. See your pricing page and in-plugin upgrade prompts for the current split.
<h4>How to use (from scratch)</h4>
<ol>
<li>Install and activate the plugin.</li>
<li>Open Notice Board → Create Shortcode (or Add New Shortcode), set up your board, and save. It will appear on All Shortcodes with a numeric id and the full shortcode ready to copy.</li>
<li>Create notices with Notice Board → Add New (or Notices in the menu). Use the Excerpt for the short text shown in the grid when excerpts are enabled.</li>
<li>Assign Notice categories if you want to filter this board by category (use matching slugs in the shortcode configuration).</li>
<li>Edit any page (or use a Shortcode block) and insert <code>[rzcnb_notice_board id="X"]</code>, replacing X with the id from All Shortcodes.</li>
<li>If pagination or load more misbehaves after changing permalinks, visit Settings → Permalinks and click Save once to flush rewrite rules.</li>
</ol>

RZCNB Notice Board

Publish notices as a custom post type and display them in configurable grids using shortcodes.

Custom Admin Notice vs RZCNB Notice Board