MYSQL query looks for duplicate e-mail

Write a SQL query to find all duplicate Person table e-mail.

Example:

+ ---- + --------- +
| Id | Email |
+ ---- + --------- +
| 1 | [email protected] |
| 2 | c d.com @ |
| 3 | [email protected] |
+ ---- + --------- +
Based on the above inputs, your query should return the following results:

+ --------- +
| Email |
+ --------- +
| [email protected] |
+ --------- +
Note: All e-mail is Lower case letters.

Source: stay button (LeetCode)

select Email from  Person group by   Email having count(Email)>1