Meteor accounts-password: can I create multiple users with the same email address?

I’m working on a site where it is critical that:

  • It’s easy for new users to sign up.
  • Users are relatively anonymous.
  • Users must be notifiable via email/SMS.

This means I don’t want users to have to create a new email address to sign up. It’s a blocker and they would probably never check it for notifications.

I was hoping to set this up in the ‘reddit’ approach where you can have multiple accounts with different usernames but using the same email address.

However, I cannot seem to be able to create accounts using accounts-password with an email address that is attached to another account. Is there a way around it? The key requirement here is that I don’t want to allow a user to try and create a fake account to check if that email address has already been registered.


What I ended up doing is to simply notify the account holder if someone tries to create an account with an email address that is already registered. We removed the requirement that you can have more than one account with the same email address.

Well, it should be somewhat clear that an accounts system needs some way to differentiate between users.

You can provide either a username or an email address (or both), but if you provide them they have to be unique.

Your solution then should be: Roll your own AccountsUI, use only the username for account creation and put an optional email address in the profile.

The part of uniqueness is clear to me. What is not clear is why it can be ambiguous. If there is a unique username, why can I not reuse email addresses? I don’t just have to roll my own AccountsUI but also will have to rewrite a number of methods from accounts-base eg. to send emails or to allow a user to log in with their email if there is just one that matches.

So before trying to roll my own, I was wondering if someone has already created a fork of accounts-password that can handle this case.

The part of uniqueness is clear to me. What is not clear is why it can be ambiguous. If there is a unique username, why can I not reuse email addresses?

That’s because the standard implementation lets the user login with both a username or an email address. That’s the way it was programmed.

If you want to use a system that, quite frankly, is a bit of a special case then you have to indeed roll your own or fork the accounts-system and change it to your liking.

As stated in the docs, you should be able to handle multiple emails for one username.
I’m currently diving more and more in the Meteor community, both in docs and code, so can you provide a simple reproduction of your issue so I could check if the problem is from the docs or if this is a bug ? :slightly_smiling_face:


My bad, it seems you’re trying to use same emails with two different accounts, which I seem to recall is impossible right now with Meteor.
I will check the code to see if this can overpassed easily :slightly_smiling_face:

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Just checked the code, it is pretty easy to skip the verification for unicity.
However, this may be a problem as there is a function to lookup an user by email in order to process.
In such case, which user should be returned ?
The actual behavior is to return null when case-sensitive duplicates are found, considering the function is designed to return a single user.
This may be overwritten and changed, but it needs to be discussed in a FR on the github repository to be sure there is no backward compatible hole I am not seeing :slightly_smiling_face:.
If you have some time before you, can you open such request so we can discuss this ?
If not, I suggest you go for your own login flow as this is not supported yet on Meteor accounts-password package :worried:

One possibility to transparently append +X in the name to avoid collisions. The emails will still be valid and deliver the email, and will let you use the meteor accounts package.

For example - user registers with and username jane - success
then tries to user and username queenjane, make the email in the system

this way you can avoid collisions and make it easy for people to use the “same” email with multiple usernames out of the box

I would go with @rhywden’s approach.

Use Accounts.ui.config to set passwordSignupFields to 'USERNAME_ONLY'

And track the email address manually in the collection, instead of using the Accounts methods

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Tracking the email address manually in the collection may be more simple in this case indeed, considering I didn’t find an issue on the meteor repository regarding this matter, which seems to indicate people are using this kind of way or simply not interested in changing the current behavior :slightly_smiling_face:

Hey there @axelvaindal @coagmano in the server i cant bypass the Accounts.createUser() with same email with that Accounts.ui.config.… matter of fact, that gets my error cause Accounts.ui is undefined

Also i go for another approach, trying to create user doc directly without Accounts, but i am facing issues with the hashing password part… trying to execute Accounts._hashPassword fails by undefined too

any sugestion?

resolved with Accounts.setPassword(userInserted, _password);