<!channel> Note above. Merging a PR now only posts two comments to the channel - one for the PR merging and one for the Issue closing (if applicable). There was no way to make a channel to only include "new" issues or PRs, but I've disabled the extra noise around commits and deployments. Also threads are disabled so they don't spam your Slack threads view. More info in my pinned comment above in #C013X86PGUS.