Enroll spouse in Duolingo with same email address as mine?
How does my husband enroll on Duolingo in a more advanced version than beginner lessons. I play duolingo beginner lessons and we have the same email address?
Get a second email. Unless your identical twins at the same level, you need your own record of hits and misses. The record lets Duolingo decide what is easy for you and what you need to work on.
Duolingo will only have one account per email address. If you're planning on doing different trees, you could share the account. However, if you want to learn the same language, you're going to have to find separate logins. What about creating one account via facebook or twitter? That might be worth a shot--I think Facebook provides you with an email account you can use if prompted for a unique one.
Barring that, and assuming getting a second email account isn't possible, I've heard that Gmail has a system where you can make new email addresses that go to the same account. I think it's aimed at families. The inbox is all the same but the kids can all have their separate email addresses. This doesn't look like the same thing so hopefully someone else will come in with more guidance and a link.
Another thought: Gmail ignores periods in the email name. First.Last@gmail.com, with a period, is equivalent to FirstLast@gmail.com, without a period. Perhaps you could have one account email be firstname.lastname@example.org and then add a period to the other account's email, email@example.com?
I found an article about that and look what it led me to! The info about adding other emails! http://gmailblog.blogspot.com/2008/03/2-hidden-ways-to-get-more-from-your.html
+ that creates a "new" e-mail address is called a recipient delimiter and its use is called address tagging. In gmail the resulting e-mail addresses are called aliases. It's officially supported by my (non gmail) e-mail provider and probably others.
Good to hear that it'll probably work with other providers. I totally forgot the OP didn't mention gmail specifically.
With GMail, one can use aliases.
Yahoo provides for disposable temporary email addresses. These can be ditched once their purpose is fulfilled.