I was offered free 50 GB of iCloud, is this legit?

Hello MBKGR,

Thank you for using Apple Support Communities.

We understand that you received an email that offered you 50GB additional iCloud storage at no additional charge from ****@ insideapple.apple.com. Without seeing the actual email, we cannot verify the authenticity of the email. You can take a look at this support article to identify a legitimate email from Apple:

Identify legitimate emails from the App Store or iTunes Store - Apple Support

You can also use this article to identify a possible phishing message:

Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

Best regards.