What Milo remembers about you

Last updated November 10, 2026

If you don't sign in

Milo does not know who you are. He counts visits, time spent and the kinds of things people ask, such as which flight or airport, tied to a random number that changes each visit. He does not save what you type in a free-form question. If you ask for live traffic, your starting point is sent to Google Maps for that one check and is not saved.

If you sign in

Milo keeps notes so he can help you faster and warn you before things go wrong. He stores:

• Your email address and first name, from Google sign-in.
• Your home airport, if you set one.
• The flights you ask him to watch, until shortly after they finish.
• A short list of flights you looked up recently.
• Notes on things you tell him about how you travel, such as airlines you fly, seat preferences and upcoming trips.
• Whether you want alerts by notification, by email or both, and which devices to notify.
• The same visit counts as above, linked to your account.

Milo does not store passwords, passport or ID numbers, payment details, medical details, your starting address or your live location.

Who else sees it

Milo is an AI helper. To answer you, your messages and his notes on you are sent to Anthropic, which runs the AI model. Flight lookups go to FlightAware, traffic checks go to Google Maps, and email alerts are sent through an email service. Notifications wake your phone without any flight details in them. Contrail does not sell your information.

Seeing and erasing it

Open your account in Milo to see everything he has noted. You can erase a single note, erase all notes, stop watching a flight or delete your account. Deleting your account erases everything listed above right away.

Questions

Milo is made by Contrail. Reach us through thecontrail.org.