Q: How do I make sure an email is not fake

It's probably not. If you want to do so anyway, type in the address to Apple's site yourself instead of following any links.

(121783)

You could post their address here so someone who knows could see it & tell you.

I'd never been asked to verify unless I'd initiated some action where confirmation

was requested or required. Seldom, but perhaps once in 10 years.

Good luck & happy computing!

It isn't.

Apple doesn't send out that kind of messages.

It is a phishing scam.

Smart move.

Have a read here to guard yourself:

Identifying legitimate emails from the iTunes Store - Apple Support

Identifying fraudulent "phishing" email - Apple Support

IF on ipod/phone/pad, click the company name (Apple Inc.) It will show you the actual email NAME.