Slack is already supported, and Mattermost accepts the same format messages. Even if it was only listed as a Slack-compatible option in the fine-print of the subscribe dialogue, that would be great.
All it takes is a URL that Mattermost provides via its Incoming Webhooks feature, like so:
Thanks for reaching out about adding a Mattermost integration. I would be happy to forward this along to our product team as a feature request. They will take a look at it for us. Thanks for the suggestion! I hope you have a nice day!
We're excited to announce the release of a long-requested feature on Statuspage. Now visitors to your status page can subscribe to get notified in Slack when you report an incident or maintenance. Th...