Autoresponders are predefined text responses sent to contacts who reply with the dedicated keyword. Autoresponders are assigned to individual Texts. Each Message has it's own set of Autoresponders. You can use the same keywords with different content among messages. Setting up an Autoresponder would allow you to, for example, include the text "Reply MOREINFO to get more info." in a text and have the system return your assigned MOREINFO message when recipients replied MOREINFO. You can use Autoresponders to keep your main text message short and allow interested parties to request more information. Standard credit charges apply for Autoresponders just as if they were messages.