I've set up TripIt so that 4 different emails forward to it. Every single one has deactivated. The only way to get TripIt to work is to manually forward emails to [email protected].

My response from TripIt:

We’re very sorry for the inconvenience with the Inbox Sync on Yahoo emails.

Please rest assured that our development team is aware of this matter and is actively working on a solution.

In the meantime, if you have travel plans that need to be imported immediately, you can forward your booking confirmations to [email protected], or manually create the itinerary using the TripIt website or app.

Thank you for your understanding and cooperation.

We’ll keep you updated on the progress of this resolution.