You can set up an automatic response as a default whenever a recipient replies to any of your email campaigns.
Before you start
Automatic responses are sent to all replies from all email campaigns you send, except for out-of-office responses and responses to transactional emails.
Autoresponders are created as triggered campaigns.
Automatic responses don't trigger for test send replies.
Send a default autoresponder
Select the Account menu icon and go to Settings > Email > Default auto responder.
Choose the triggered campaign you want to send as an automatic response to all campaign replies.
To preview a campaign, select the Preview icon.
The campaign you choose sends as an auto-response to all replies received from all campaigns you send, except for out-of-office or similar responses.Select Save.
Change or remove a default autoresponder
Select the Account menu icon and go to Settings > Email > Default auto responder.
Choose the new triggered campaign you want to send as an auto-response to all campaign replies. To stop sending an auto-response, select (none).
Select SAVE.