Which method is NOT a way to create polls on Slack?

Creating polls on Slack typically involves utilizing specific tools or integrations designed for that purpose. Among the listed options, asking questions in a public channel, while it may seem like a straightforward way to solicit responses, does not effectively create a structured poll. Polls are usually intended to gather responses in a clear, organized manner, allowing participants to select options easily and providing the creator with a consolidated view of the results.

On the other hand, custom bot commands and third-party integrations specifically enhance the polling experience by offering functionalities such as multiple-choice answers, anonymity, and automated result compiling. Built-in survey tools also provide an intuitive interface for creating and managing polls directly within Slack.

Thus, while asking questions in a public channel allows for engagement, it lacks the structured, efficient capability of creating an official poll, making it the method that does not belong in the context of poll creation.