I'm the OP. I heard similar stories - a friend got an AT&T bill for $1200 after getting off a plane in Europe (from US) and turning it on for 1 minute.
I'd bet my reputation that AT&T is bundling data packets across the border - and that this could be the basis of a big class action suit.
In my case, I was driving northward from Oak Harbor to Vancouver. Roaming was off on my AT&T phone - so there should have been no intl data billed until I turned it on for that one minute.
If only it were as simple as you make it sound ... in practice, Corporations repeatedly use commerce and contracts clause rights to sue communities and states to overturn environmental regulations. They use free speech rights to flood elections with money and affect the outcome. They use the rights from unreasonable search and seizure to prevent the release of acts of public harm in lawsuits under the guise of protecting intellectual property. The impacts of corporate constitutional rights have overturned our democracy.
Fair point. I like hitting the do not disturb button along with my phone's do not disturb ... it has a mental effect on the mind ... and allows me to focus more clearly on other things. The scheduled quiet hours are also cool.
I wrote this to show how you can integrate the Mailgun cloud-based email service in your PHP-based application. I also used the Yii Framework for Geogram ... so it's a great example of the strengths of both Yii & Geogram.