There's no real way to sugar-coat losing your job. I think an email is as good as anything. Ensures everyone gets the same message at the same time.

What is the alternative? Have 30,000 meetings? How long will that take?

It's crazy to me that companies are allowed to do this, given that staff are generally expected to be accommodating and give notice when they quit.

In the US, different countries have processes more favorable to employees.

Even if you're being offered a very good package, being fired, regardless of how, is cold.