Email as username during signup/login? Your experience?
126983
email field or username for logging in an application?
156774
What is the best way to store an email address in PostgreSQL?
50260
Is there a new auto-login feature?
148899
Is there an option to create and Opt-in a user in the same API call?
107204
"Email" or "e-mail"?
61905
Can you have two different names for the same alternative ("send mail as") email address in Gmail?
76553
Does using @user in a question or answer send an inbox-notification to that user?
154456
Use email address as primary key?
15223
Is it OK to require users to have a third party login account?
24316
Usernames vs. Real Names
122808
How do you address unknown peers in email?
34310
How can I have a "Dear %firstname%" template in my Gmail?
35064
Is Stack Overflow merging two different accounts by email without the user's consent?
147823
Email user when password is reset by admin
30293
How a Gmail username can be taken but not recognised simultaneously?
137466
Etiquette for username changes
5491
confirm email or email verification later?