Replying to messages
To reply to a message, just click in the box below the message and type away! Or, you can click the arrow icon in the top right corner of the message you received.
If there are multiple recipients of the message and you want to respond to all of them, click Reply to all in the box below the message and begin typing.
You can also click the down arrow next to the Reply button and select Reply to all.
Reference Replying to messages