For auto response to work you must turn on "Read Received" from the Android app. You can turn it on from the navigation drawer.
You can add automatic responses to certain messages using the Auto Responder. Just click on the Auto Responder from navigation menu. You will see form like below.
Message is the received message text you want to write response for and Response is the message that will be sent by the system automatically in response to received message.
Respond if is how system determines how to compare the received message with Message. You can find out what each option means below.
1. Exact match (Case Insensitive) :- If you select this option then system will only send the response message if received message is same as Message. Case will be ignored.
For example, I have a response with "Hi" as my Message value and if I receive message "Hi", "hI, or "HI" then system will send the response otherwise it won't.
2. Exact match (Case Sensitive) :- If you select this option then system will only send the response message if received message is same as Message. It will compare the case too.
For example, I have a response with "Hi" as my Message value and if I receive message "Hi" then system will send the response otherwise it won't.
3. Contains :- If you select this match type then system will only send the response message if received message contains the Message value.
For example, I have a response with "Hi" as my Message value and if I receive message that contains "Hi", "hI, or "HI" anywhere in it then system will send the response otherwise it won't.
4. Regular Expression :- If you select this match type then system will only send the response message if received message matches the regular expression pattern entered as a Message value.
For example, I have a response with "/.*/s" as my Message value and if I receive any message then system will send the response. It happens cause "/.*/s" pattern matches anything you enter.