Joost

PostCaster publishes WordPress posts to Bluesky and Mastodon when a post goes live. It supports both site-wide accounts and personal author accounts, with previews, test posts, and per-post overrides on the post edit screen.
This plugin is intended for editorial sites that want social posting to stay close to the WordPress publishing workflow.
Key capabilities:
<ul>
<li>Publish automatically when a post moves from unpublished to <code>publish</code></li>
<li>Use site-wide accounts in <code>PostCaster > Global socials</code></li>
<li>Let authors use their own accounts in <code>PostCaster > My socials</code></li>
<li>Preview the exact text before publishing</li>
<li>Override the text per article</li>
<li>Choose featured-image behavior per network</li>
<li>Re-publish manually from the post edit screen when needed</li>
</ul>
Quick start:
<ol>
<li>Activate the plugin.</li>
<li>Enable PostCaster in <code>PostCaster > Settings</code>.</li>
<li>Choose which post types may be published automatically.</li>
<li>Configure one or more site-wide accounts in <code>PostCaster > Global socials</code>.</li>
<li>Send a test post for each configured network.</li>
<li>Publish a test article and confirm the result on the target network.</li>
</ol>
Supported networks:
<ul>
<li>Bluesky</li>
<li>
Mastodon 
Permissions and publishing model:
</li>
<li>
Editors and administrators can publish through configured global accounts.
</li>
<li>Authors can publish through their own personal accounts when personal publishing is enabled for them.</li>
<li>A user who has access to both global and personal targets can choose which targets to use during manual publishing.</li>
<li>If Co-Authors Plus is active, linked co-authors are also recognized for personal publishing.</li>
</ul>
Templates and previews:
<ul>
<li>The default message template is based on post title and URL.</li>
<li>You can set a general template, network-specific templates, and post-specific overrides.</li>
<li>The post edit screen shows previews for the currently available publish targets.</li>
<li>If the final message is still too long for a network, PostCaster skips that target and stores an error on the article.</li>
</ul>
For template details and examples, see <code>docs/templates.md</code> in the plugin repository.
Troubleshooting highlights:
<ul>
<li>Always use the built-in test-post buttons after changing credentials.</li>
<li>If a network is enabled but not posting, first check credentials and article-level errors.</li>
<li>If encrypted credentials can no longer be read, re-save them in <code>Global socials</code> or <code>My socials</code>.</li>
<li>Publishing runs through Action Scheduler in the background; low-traffic sites still benefit from a real server cron job or scheduled task for reliable timing.</li>
</ul>
External services:
PostCaster connects to external social networks only after an administrator or user explicitly configures that network and saves the required credentials.
When configured, PostCaster may send:
<ul>
<li>text rendered from post fields and templates</li>
<li>featured image bytes and alt text</li>
<li>the configured account identifiers required by that network</li>
</ul>
Relevant service documentation and terms:
<ul>
<li>Bluesky developer docs: https://docs.bsky.app/</li>
<li>Bluesky terms: https://bsky.social/about/support/tos</li>
<li>Mastodon API docs: https://docs.joinmastodon.org/api/ 
Privacy note:</li>
</ul>
PostCaster does not send usage analytics or telemetry to the plugin author. Network requests are only made to the configured social networks for test posts and actual publishing.

PostCaster

Publishes WordPress posts with featured images to Bluesky and Mastodon.

Emma Blackwell

Simple Auto Poster for Bluesky is a set and forget plugin that automatically shares on ATProto networks such as bluesky whenever a post is published from WordPress. It only requires a bluesky account and its APP password.
<h3>PLEASE NOTE: At the moment the plugin only works if the posts are published with featured images (new versions and features coming soon)</h3>
Features:
<ol>
<li>Minimal settings</li>
<li>High compatibility</li>
<li>Enhanced security</li>
</ol>
<h3>Third-Party Service Usage</h3>
This plugin relies on the bluesky social network API as a third-party service to post content automatically. The plugin interacts with the bluesky API in the following circumstances:
When authenticating the user’s bluesky account 
When uploading images to bluesky 
When creating posts on bluesky
<h4>Service Information</h4>
Service Name: Bluesky 
Service Website: https://bsky.app 
API Documentation: https://docs.bsky.app/
<h4>Terms of Service and Privacy Policy</h4>
Bluesky Terms of Service: https://bsky.social/about/support/tos 
Bluesky Privacy Policy: https://bsky.social/about/support/privacy-policy
<h4>Rate Limiting</h4>
Please read how rate limits work to avoid having your account restricted: https://docs.bsky.app/docs/advanced-guides/rate-limits
** Please review these documents to understand how your data is handled when using this plugin with the bluesky (ATProto) service. **

Simple Auto-Poster for Bluesky

Simple Auto Poster for Bluesky is a set and forget plugin that automatically shares on bluesky whenever a post is published from WordPress.

PostCaster vs Simple Auto-Poster for Bluesky