Akeda Bagus

This plugin is an extension to <a href="https://wordpress.org/plugins/slack" rel="ugc">Slack plugin</a> that allows you to send notifications to Slack channels whenever someone sent message through Contact Form 7.
The new event will be shown on integration setting with text When someone sent message through Contact Form 7. If checked then notification will be delivered after Contact Form 7 sent the message through email.
You can alter the message with <code>slack_wpcf7_submit_message</code> filter. The filter receives following parameters (ordered by position):
<ul>
<li><code>$message</code> — Default message to send to Slack</li>
<li><code>$form</code> — Form object</li>
<li><code>$result</code> — Array of result</li>
</ul>
Development of this plugin is done on <a href="https://github.com/gedex/wp-slack-contact-form-7" rel="nofollow ugc">GitHub</a>. Pull requests are always welcome.

Slack Contact Form 7

Send notifications to Slack channels whenever someone sent message through Contact Form 7.

braveryk7

Send Chat Tools is a plugin that allows you to send WordPress announcements to chat tools. 
Currently, it sends an announcement when a comment is received. 
You can instantly check comments that you didn’t notice with the default email notification.

Send Chat Tools

Send Chat Tools is a plugin that allows you to send WordPress announcements to chat tools.

Slack Contact Form 7 vs Send Chat Tools