David Bisset

This bare-bones plugin takes activities generated by the BuddyPress members, profile, member, and/or groups components and posted them to your Slack team. You can choose to have this stream of posts go to a particular channel, private group, or even a user on your Slack team. The plugin also can provide an optional “Slack” settings panel for users in their BuddyPress profile which gives them control if they want their activities posted in Slack or not.
In order for this plugin to work you MUST login into your Slack settings and set up an incoming webhook integration in your Slack team. Here’s the quick way to do that.
<ol>
<li>Login as admin of your Slack team and go to https://api.slack.com/incoming-webhooks.</li>
<li>Click the ‘Set up an incoming webhook integration in your Slack team to try it out’ link that is near the top.</li>
<li>Choose a channel (or create a new channel) under “Post To Channel”. Note that this is the default channel and the plugin can override this to post to another channel, group, or user.</li>
<li>You’ll be provided a webhook URL. Grab the provided webhook URL and use that in the plugin settings.</li>
</ol>
Needless to say, without a correct webhook the plugin won’t work.
Please note that if you have a busy site, your Slack channel might fill up quickly. Use responsibility. Don’t do drugs. Stay in school.

BuddySlack

Have BuddyPress activites posted to a Slack channel, private group, or user (via direct messages).

Akeda Bagus

Reedyn

This plugin allows you to send notifications to <a href="https://slack.com" rel="nofollow ugc">Slack</a> channels when certain events in WordPress occur.
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By default, there are two events that can be sent to Slack:
<ol>
<li>When a post needs review (status transitioned to ‘pending’)</li>
<li>When a post is published</li>
<li>When there’s a new comment</li>
</ol>
It’s possible to add more events using <code>slack_get_events</code> filter. For more information check <a href="http://gedex.web.id/wp-slack/" rel="nofollow ugc">the doc</a>.
Development of this plugin is done on <a href="https://github.com/gedex/wp-slack" rel="nofollow ugc">GitHub</a>. Pull requests are always welcome.
There are some extension plugins that notify events triggered by other plugins. Belows are some of them:
<ul>
<li><a href="https://wordpress.org/plugins/slack-edd" rel="ugc">Slack EDD</a></li>
<li><a href="https://wordpress.org/plugins/slack-woocommerce" rel="ugc">Slack WooCommerce</a></li>
<li><a href="https://wordpress.org/plugins/slack-contact-form-7" rel="ugc">Slack Contact Form 7</a></li>
<li><a href="https://wordpress.org/plugins/slack-gravityforms" rel="ugc">Slack Gravity Forms</a></li>
<li><a href="https://wordpress.org/plugins/user-password-reset-notifications-for-slack/" rel="ugc">Slack User Password Reset</a></li>
</ul>

Slack

Works well; easy to add additional notifications, though it would be nice if there were a few more built in.



Works well; easy to extend

Send notifications to Slack channels when certain events in WordPress occur.

BuddySlack vs Slack