Fine! .csv.gz ftw!
Yeah, but it’s important to point out that the reason for that is that your data is encrypted at rest and they cannot decrypt it for you and your vanilla imap client.
They do have a decryption app for desktop that allows you to use your desktop email client.
Have you seen those bullshit rerelease editions? SAD!
I mean, if you consider how much a study costs to get to the point of publication, the publication costs are peanuts in comparison.