Using Block Kit to post messages
You now have the ability to schedule posts using Slack's Block Kit.
Please note: Dots will not validate your Block Kit. Ensure that you are copying the right Block Kit from Slack's Block Kit builder and pasting it. If anything, try posting to a test channel to ensure it looks the way you want it to.
2. In the Schedule post modal, check mark Use Slack Block Kit
3. Format your message using Slack's Block Kit Builder (https://app.slack.com/block-kit-builder ) and then copy it. Make sure you copy the exact contents.
4. Paste in the text box below.
5. Pick the time and day, and you are all set!