While reading a message, you may choose to reply to the sender alone or to send your reply to all the recipients of the original message. To do this, press the curved arrows icon, followed by the Reply or Reply all menu item. Note that when replying to a message that was not sent using ECS, the Send as ECS is never checked, regardless of your default settings. You may, however, overrule this by selecting the checkbox before sending the reply. When replying to an ECS message, your ECS defaults are used to determine the state of the two checkboxes.