Facebook’s WhatsApp is adding many more features to its platform. The recent addition is new functionality to its disappearing messages feature, which lets users set messages in a chat to automatically be deleted after a set period of time. WhatsApp says users will now have the option to turn on disappearing messages automatically for all their new one-on-one chats, so that all future messages will be automatically deleted from the service.

When you enable Disappearing Messages, you can set messages to disappear 24 hours, 7 days, or 90 days after the time they are sent. The most recent selection only controls new messages in the chat. This setting won’t affect messages you previously sent or received in the chat. In an individual chat, either user can turn disappearing messages on or off. In a group chat, any group participants can turn disappearing messages on or off. However, a group admin can change group settings to allow only admins to turn disappearing messages on or off.

If a user doesn’t open WhatsApp in the 24hour, 7 day, or 90 day period, the message will disappear from the chat. However, the preview of the message might still be displayed in notifications until WhatsApp is opened. When you reply to a message, the initial message is quoted. If you reply to a disappearing message, the quoted text might remain in the chat after the duration you select.

If a disappearing message is forwarded to a chat with disappearing messages off, the message won’t disappear in the forwarded chat. Also If a user creates a backup before a message disappears, the disappearing message will be included in the backup. Disappearing messages will be deleted when a user restores from a backup.

WhatsApp notes that turning on disappearing messages by default won’t affect existing chats. When you start a new one-on-one chat, a notice will appear to say that the disappearing messages feature is turned on, alongside a note that says it’s on by default . You also have the option of turning the setting off for individual chats.

Although the new default setting doesn’t affect group chats, WhatsApp says it has added a new option when creating groups to let you enable the disappearing messages feature.