We've seen a ton of these, even 2 that I can think of on HN in the last few years. How is yours different and why is it better?
A lot of these products will try permutations or combinations of the user's name and use a few methods to determine if those emails are taken and they "assume" that email belongs to the user.
Nymeria doesn't assume or guess. We have over 200 million email addresses tied directly to users, they are not a guesses.