MySQL Validate Email Records

Somethis like this

SELECT * FROM users WHERE email NOT REGEXP '^[^@]+@[^@]+\.[^@]{2,}$';

OR

SELECT * FROM users WHERE email NOT REGEXP '^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$';

Update. It's just an example,how to use regular expression in Mysql.

You can use something like this

SELECT * FROM your_table
WHERE email_col LIKE '%@%.%'

to get (quite) valid emails, excluding the ones that are wrong for sure.
But you should check results to be sure of what you're showing...
Anyway, this is a starting point...