autoresponder
noun
au·to·re·spond·er
variants:
or auto-responder
or less commonly auto responder \ ˌȯ-tō-ri-ˈspän-dər 
\
\
plural autoresponders
or auto-responders
also auto responders
Definition of autoresponder
: a function of e-mail software that automatically sends a response to incoming messages
Unanswered e-mail is as big a turnoff as unanswered calls. Consider using your ISP's autoresponder to acknowledge received e-mail. It lets the visitors know their message arrived and gives you an opportunity to thank them for visiting the site.— Victoria Hall Smith, PC World, January 1999
Other Words from autoresponder
auto-response
or less commonly auto response
or less commonly autoresponse \ ˌȯ-tō-ri-ˈspän(t)s
\
noun,
plural auto-responses
also auto responses
also autoresponses
\
noun,
plural auto-responses
also auto responses
also autoresponses
You can let people know you are out of the office via greeting on your voicemail and an autoresponse to e-mail.
— Slate Magazine, 13 Apr. 2009
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