One Email a Day provides you with something that no other email service provider does: it gives you a unique email id. You can use the email id for any purpose that you want to. You can use that to subscribe to newsletters or other marketing or other material that you want on your email inbox. The advantage of having an email id unique to your account is that you are much less susceptible to spam. When your email id has your actual identity, like your name and surname or just initials, online marketers can find out easily what kind of demographic you may belong to. They track your interests and then spam you. Even gender plays a strong role here.
One Email a Day plays an important role in stemming the spam effects. With the unique email id that you get, you can use it for any purpose without being worried about the spam aspects. The email id will be impossible to decipher. You can use this mask to sign up for any newsletter that you want! Moreover, One Email a Day makes it possible for you sort all these emails into select categories, labeled as ‘Personal’ or ‘Marketing’. When you receive that one email in the day, you can immediately find out the email that you are looking for.