How can you conduct a poll in Slack?

Conducting a poll in Slack primarily involves leveraging integrated poll apps or utilizing Slack's emoji reactions for informal voting. This method allows users to easily cast their votes by adding emoji reactions to a message, making it a quick and interactive way to gather opinions on various topics. Many integrated poll apps available in the Slack App Directory provide additional functionalities, such as anonymity, custom question formats, and more comprehensive analysis of results.

The other methods mentioned might allow for gathering feedback but don't function as streamlined polling solutions. Simply tagging users in a message for feedback might not ensure everyone participates, and sending direct messages does not facilitate a collective response. Additionally, using the comment feature in threads does not inherently allow for voting or tallying responses, as it is more suitable for discussions rather than formal polling. Thus, employing integrated poll apps or emoji reactions is the most effective and engaging way to conduct a poll in Slack.