[bwillard]

We are rolling this feature out slowly, right now only about 1% of people have access to Takeout's of GMail. But we hope to increase it to 100%, including Google Apps accounts (if your administrator hasn't blocked it) over the next couple weeks.

[dmd]

I'm wondering how mbox format is going to work for 20+ gigabytes of email. Am I seriously going to be presented with a multi-gigabyte-sized text file?

[generalpf]

I bet they give it to you compressed, which should have a pretty good ratio unless your mail is a bunch of binary attachments!