My mobile Slack does not support in-chat buttons. Can I still use Gratify? James Diecidue April 10, 2017 12:17 Updated Follow Please try updating Slack. Gratify depends on in-chat buttons to work properly. Related articles What is the purpose of public channels (#sql, #shopify, etc)? Can I partner-up with other freelancers? Comments 0 comments Please sign in to leave a comment.