autoresponder
nounUK /ˌɔːtəʊrɪˈspɒndə/
US /ˌɔːtoʊrɪˈspɑːndər/
A computer program that sends a reply message by itself when someone emails you.
When I went on vacation, my autoresponder told everyone that I would answer their emails later.
RELATED WORDS
OTHER MEANINGS
2. A feature in email software that automatically answers incoming messages.
She turned on the autoresponder before her trip.
3. A device or program that automatically sends a set response to a request.
The help desk uses an autoresponder to confirm every ticket.
4. A prewritten message sent automatically to anyone who contacts an address.
The signup page sends an autoresponder with a welcome note.