Book Fight 6 months ago Email Confirmation Flight details Pricing incl. taxes Calendar .ics as attachment 4 days before Trip Reminder Time Zone Difference Pricing incl. Weather Currency 1 day before Boarding Pass Confirmation 1 day before Online Check-in Reminder Holistic User Experience with Email
Auto-responder, Alerts Expected Relation one-to-many one-to-one one-to-one Unsubscribe Yes Yes No Examples Newsletter, announcements, etc. Feedback Request, new followers, etc. Invoice, shipping notifications, etc.