How to delete Snapchat messages automatically

Open Snapchat and go to the chat you want to manage.

Press and hold on the friend’s name or chat.

Tap on Chat Settings from the menu options.

Select Delete Chats or Delete After Viewing settings.

Choose whether messages disappear after viewing or after 24 hours.

The selected setting will apply to future messages in that chat.

You can change the auto-delete setting anytime from Chat Settings.