On August 26, 2014, Slack introduced a new feature allowing users to select a message theme for their notifications. This can be done by navigating to the Account Settings and adjusting the settings under Notifications. The Emoji theme option provides visual cues for build statuses: 👍 for passed builds, 👌 for fixed issues, 👎 for failed builds, 👎👎 for continuous failures, or ✋ for canceled builds.