python solution beat 91%
\nclass Solution(object):\n    def numUniqueEmails(self, emails):\n        """\n        :type emails: List[str]\n        :rtype: int\n        """\n        if no
```\nclass Solution(object):\n    def numUniqueEmails(self, emails):\n        """\n        :type emails: List[str]\n        :rtype: int\n        """\n        if not emails:\n            return 0\n        def valid(email):\n            local,host=email.split(\'@\')\n            local=local.replace(\'.\',\'\')\n            #print(local)\n            local=local.split(\'+\')[0]\n            # print(local)\n            return local+\'@\'+host\n        res=set()\n        for email in emails:\n            res.add(valid(email))\n        return len(res)\n```
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