I'd like to put a "Share on Slack" button on my website. It would be similar to the buttons we have for "Share on Facebook" and "Share on Twitter". A user would click on it and be able to post some text and a link that we suggest on Slack.
I've been able to find URLs that I can use on Facebook and Twitter for doing this, but I've been unable to track down one for Slack? Does it exist? I see that AddThis was able to implement a button but I'm not sure exactly how they are doing it.