Pensieve works offline so you can capture your ideas anytime, anywhere.
Pensieve automatically enters Offline Mode when your device is in Airplane Mode or when an internet connection is not available. However, you can manually put Pensieve into Offline Mode by going to Main Menu > Settings > Offline Mode in the General section.
When working offline, emails you create with Pensieve are saved as drafts to be sent later. You can find all of your saved drafts by going to Main Menu > Drafts.