SSO with non-unique email addresses?


Is it possible to use Discourse with SSO and email addresses which are not unique?
That means users have multiple accounts with different usernames but same email addresses.

(Jeff Atwood) #2

No, emails are unique identifiers for users in Discourse and this is fundamental to all identity in the system.

(Jay Pfaffman) #3

A work around for many people is to use +addressing, like,, and so on. O all email providers support that, but most do.

(Jeff Atwood) #4

@pfaffman how exactly is that going to help them there? By disambiguating? That is true, when you have

you could change it to


(Jay Pfaffman) #5

It’s often useful to have multiple accounts, and using +addressing lets you do that without creating multiple email
Addresses. will get delivered to User@gmail.com1 won’t let them create an account.

Oh, but SSO was the point of this thread, so it’s not clear that my solution will help here. They’d still need to make every email address unique, one way or another.