Here is my code:

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Declare @MyMessage nvarchar (255)

Set @MyMessage = 'Sent out emails'

Declare MyCursor Cursor For

Select email From fs_users  Where user_id < 35

Open MyCursor

Fetch Next From MyCursor Into @MyRecipients

While @@Fetch_Status = 0

BEGIN

Fetch Next From MyCursor Into @MyRecipients

Exec Master.dbo.xp_sendmail @MyRecipients, @MyMessage

End

Close MyCursor

Deallocate MyCursor

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Also, when I hard-coded multiple email addresses, it went out ok.