Contacts allow duplicate emails

[Howlong11]

While two people in contacts can not have identical names, different people are allowed to have same email addresses. This is not likely to happen, and it is better to be captured.

[nus-pe-script]

Team's Response

In reality, there are people who share the same company email.

We wanted to accommodate for this case, and impose fewer restrictions on the user.

Items for the Tester to Verify

:question: Issue response

Team chose [response.Rejected]

• [x] I disagree

Reason for disagreement: In most cases, people would be using their private emails and not company emails. Even if they belong to a same company, they are most likely to have their own emails from the company's domain. Furthermore, while the app does not allow people with same names, which is more common in reality, it is a irony that it does allow duplicate emails for people who share the same company email.

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## :question: Issue type Team chose [`type.FunctionalityBug`] Originally [`type.FeatureFlaw`] - [x] I disagree **Reason for disagreement:** it is a feature flaw that did not consider the most likely situations while using this product.

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## :question: Issue severity Team chose [`severity.Low`] Originally [`severity.Medium`] - [ ] I disagree **Reason for disagreement:** [replace this with your explanation]

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