Slack Send Direct Message to ALL on SLACK (Not group message I want to send individual message

问题

my question is whether Slack can Send Direct Message to ALL persons on my group on SLACK (Not group message I want to send an individual message

回答1:

There is no API method for that, but you can create this functionality easily with a small script.

1. Get all members of a Slack team incl. their user IDs with users.list
2. Loop through all active users (ignore the ones with deleted = false)
3. Send a direct message to each user with chat.postMessage by using their user ID as channel

Be sure though to respect the rate limit of max. 1 message per second or the API will return errors.

来源：https://stackoverflow.com/questions/46250971/slack-send-direct-message-to-all-on-slack-not-group-message-i-want-to-send-indi