“Wait for Response” is the main tool for collecting input from contacts inside a Messaging flow. It lets you validate replies with response rules, route contacts into categories, and optionally handle cases where no one responds. Used well, it keeps your flow clean, your data reliable, and your contacts guided.

Deleting a contact field permanently removes the field and all stored values for every contact. Because this is irreversible, it’s best to confirm the field is not used in flows, expressions, or reporting before you delete it. Deletions are done from Contacts → Fields in the Manage Fields interface.