The Autoresponder is an automated response mechanism that lets you automatically distribute information to inquirers. Upon receipt of an e-mail message, the configured autoresponder can automatically reply with a standard message and include files ( PDF, images, audio, etc ) as well. 

Companies can use this feature to automatically reply with brochures to requests sent to info@domain.com , or with application forms for e-mails sent to carreers@domain.com.