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External Data Source

Source

Regular Expression
([a-z\u4e00-\u9eff\u00C0-\u017F0-9-_]+(?:\.[a-z\u4e00-\u9eff\u00C0-\u017F0-9-_]+)*)@((?:[a-z\u4e00-\u9eff\u00C0-\u017F0-9-_]+\.)*[a-z\u4e00-\u9eff\u00C0-\u017F0-9-_]{0,66})\.([a-z\u4e00-\u9eff\u00C0-\u017F_]{2,6}(?:\.[a-z\u4e00-\u9eff\u00C0-\u017F_]{2})?)