Adding new cards to Trello board via Slack channel is ok.
But I do not receive when someone post new cards to Trello board.
It sounds like you've added the Trello Slack app just fine, and that's working as intended. That app does not provide any notifications automatically from Trello.
For that, you want to enable the Slack Power-Up on your board, which can be configured to notify you of whatever activity you're looking for: http://help.trello.com/article/1049-slack-app
So you’re using Trello at work, at home and to track your new DIY crafts. The family and co-workers are all on board and everything is organized, color coded and has a due date. But still, there’s so...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG