Is the email: em-s.dropbox.com legitimate? [Answer: Yes]

I just received an email, purportedly from Dropbox although I'm inclined to think it's a scam. However, after browsing through the forum, I noticed others with more or less the same complaint and getting replies (whether from Dropbox or just superusers answering questions, I don't know) that attempt to justify email marketing content that is clearly awful, based on a fear strategy. I'll paste the full communication of what I received (mind you, this is the first email I've gotten from Dropbox except for the ones they sent when I signed up):

Subject line: 
Eligibility confirmed: username, you'll lose access to your files if you don't act soon!

Email Content:
Notice: Your files are about to stop syncing, username.
Here's access to up to up to 3 TB (3,000 GB) of space.

There's limited space available in your Dropbox. Even adding just one more file might stop your account from syncing and being able to access them when you need to.
View your account 

As a professional copywriter, I can assure you that NO ONE appreciates receiving an email with the above subject line, no matter the offer. The email content is hardly any better, with its pushy sales tactic. If this came from an ad agency's creative team, I suggest dropping them immediately. This is low-class scaremongering and scammer-level writing. It even has a grammatical error (to up to up to).

Marketing emails are effectively a knock on someone's door. A business shouldn't be knocking with THAT (a threat, basically) if it hopes to get people to open their virtual door and act welcoming. Honestly, I'm surprised at the terrible communication, as Dropbox is a pretty good service overall. I'd hate to see it ruin the goodwill it has managed to accumulate due to bad email marketing. Sadly, oftentimes a single misstep can wreck a record of sound decisions ("I'm telling YOU. RIGHT. NOW. ... That [profanity removed] is NOT real!"). ‌🤣‌

Marketing emails are generally trashed without a glance and it's a victory to get people to even open them. Dropbox needs to rethink its strategy and steer clear of any wording that sounds pushy or anxiety-inducing if it wants users to open emails, read, engage, and click through (email-savvy people avoid links since there's always a chance it's a phishing attempt, so maybe rethink that, too). Here's a tiny bit of help to get started (not mine and not selling anything, just something I downloaded a while ago to get some pointers): [link removed]
 
So, that's my long-winded way to ask... was this a phishing email? (If it was, sorry Dropbox. My bad.)