WP SlackSync is a Wordpress plugin that lets you integrate and synchronize your Slack channels with your Wordpress website. There is an auto invite function for team/community members who don't have access to your Slack team yet. If they do, they can easily login with their account.
This plugin is created because of my own needs, but apparently there were more people who would like to have such an addon/plugin. Thats why we extended some functions, and we will be adding more soon. If you have any ideas or requests, just let us know. Would love to hear your thoughts!
If you guys have any questions regarding WP SlackSync, don't hesitate to ask them!
**UPDATE:
There is a demo of the plugin now, see: http://www.wpslacksync.com/demo/
WP SlackSync