Selecting Domain from Email Address

Recently I came across a quick need where I needed to retrieve domain of the email address. The email address is in the database table. I quickly wrote following script which will extract the domain and will also count how many email addresses are there with the same domain address.

SELECT RIGHT(Email, LEN(Email) - CHARINDEX('@', email)) Domain ,
COUNT(Email) EmailCount
FROM   dbo.email
WHERE  LEN(Email) > 0
GROUP BY RIGHT(Email, LEN(Email) - CHARINDEX('@', email))
ORDER BY EmailCount DESC

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