It's a scam. I can show you literally thousands of these that get sent to my customers every day. The subject line often has a password in it to get you motivated to do something (pay). In a hour, I see dozens sent to multiple recipients with the exact same template. It's such a poor scam, we treat it as nuisance and not a threat. If you Google the content, you will likely see a whole bunch of people who got it. No way do these guys have hundreds of thousands of videos to send to individuals. It's just mathematically impossbile.
These guys pull passwords from publicized breaches. Since many dumbasses recycle usernames and passwords across sites, the scammers are able to get you to flinch when you recognize yours.
Dont pay, dont click, dont give away any additional credentials. Also, don't use your corporate email address for ANY FUCKING THING but work. Every site needs it's own unique password.