With an update rolling out to Inbox, you will easily be able to share holiday itineraries with loved ones, then share the memories you make together after everyone goes home. When you have emails and calendar events regarding trip plans (flight info, car rentals, etc), Inbox recognizes this, bundling all of the info into a single itinerary. With the update, these plans can be shared with anyone you choose, allowing them to track your status right alongside you.
These bundles can be moved offline and stored directly on your smartphone or tablet, meaning you won’t need to worry about spotty WiFi on your flight to see what leg of the trip is up next.
Once the holiday cheer has been spread appropriately, it is time to go home. Undoubtedly, you may have taken photos during your trip, and the update to Inbox allows you to look through and attach multiple photos to a single email. From within the draft, you can view thumbnails for quicker adding of holiday photos, cutting down on the time it takes to get your mother those photos of the grandkids she is desperate for.
The update is rolling out to Google Play right now.
Update: Below is the .apk for version 1.16 that includes the ability to add emails manually to Trips. The other stuff, quick photo adds and Trips sharing seems to be a server-side thing, as I have it on one phone and not the other.