If someone's so lazy they use an auto-generated username, they may not have done email verification. What are the chances that they'll ever return?
119457
Would it be better to encourage people to set a user name?
150250
What is the maximum length of a valid email address?
107394
How can you fake an email address?
26553
Further anonymize deleted accounts by changing the username in close/delete notices
128678
Is it possible to get the User Id without the authorization?
30293
How a Gmail username can be taken but not recognised simultaneously?
153733
How do you give people prefixes for their usernames?
115621
Can I request a moderator to re-activate my SO account that has been suspended because of mistake?
62307
How can I find out where an email really came from?
88258
Can I recover a stack overflow account with a dead email address?
35623
Created a new user at Stack Exchange, but did not get the right username
84734
Does there exist a user with this role?
104933
Why are there a lot of users with Reinstate Monica in the username?
6174
How to check if an email address exists without sending an email?
114708
Why are Stack Exchange profile deletion email notifications sent from Stack Overflow email address?
140073
Which email was the verification email sent to?
149244
If I leave a comment, then delete it, does a person still get notified?