When ezpRestBasicAuthStyle authentication is set, it doesn't allows you to login using email and password.

Maybe could be problems on client because the "double @":

http://user@domain1.com:password@domain2.com

But it can be solved by URL encoding both user and password values

Steps to reproduce

1. Configure rest.ini like

[Authentication]
RequireAuthentication=enabled
AuthenticationStyle=ezpRestBasicAuthStyle

2. Ensure authenticacion by email is enabled.

AuthenticateMatch=login;email

3. Try to access a REST API URL using email and password. Example: http://domain.com/api/ezc/v1/foo
4. Access is denied