According to https://help.dropbox.com/account-access/one-time-code there are two versions of the "one time sign-in code" email.
They are identical except that one of them includes a link for "I didn't try to sign in," presumably to secure the user's account via resetting one's password and such, while the other simply says "If you didn't try to sign in, don't worry. You can safely ignore this email." Neither the email nor that help page elaborate on why it's safe to ignore the email, though.
If I receive an email with a security code and I haven't tried to sign in at all recently, wouldn't it always mean someone else is attempting to sign in to my account? Furthermore, because the code is only sent if you type the correct email and password, wouldn't it mean that this person has my Dropbox account password? I'd think that would always be cause for alarm, even if they weren't actually able to get into the account.
So what's the difference? In what circumstances is one of those two emails sent vs the other?
