Yes & No. Depending on what kind of organization you are will help you answer this question. If you are a non-profit then you are able to transfer numbers from autoresponders to your subscriber list. Any other organization can only use subscribers that have opted into your list. If you would like to be able to offer an option for clients to opt-in from an autoresponder please review this page for more details.
If you have any additional questions please reach out to your Customer Success Manager or reach out via the chat on this page.