Add Command Email Field

[nigellqx]

When the email has 2 "_", it does not let me add the contact. This is not specified in the field restrains where they cannot be 2 consecutive special characters.

[nus-pe-script]

Team's Response

There is a workaround of using the original NUS email, E1234567@u.nus.edu for instance.

The 'Original' Bug

[The team marked this bug as a duplicate of the following bug]

Valid email not accepted

Based on the UG and error message, A123++A@example.com is an allowed email address as the local part is alphanumeric + allowed special char, and does not start or end with special char. However, it is not allowed in the app. While the planned enchancement says that it is planned to "increase the flexibility of email validation", I belive this is different since it is a mismatch of behaviour between the UG and the application. Hence it is a functionalityBug and not a feature flaw covered by planned enchancement.

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_{[original: nus-cs2103-AY2425S1/pe-interim#2701] [original labels: severity.Low type.FunctionalityBug]}

Their Response to the 'Original' Bug

[This is the team's response to the above 'original' bug]

Similar to #1847.

There is a workaround of using the original NUS email, E1234567@u.nus.edu for instance.

Items for the Tester to Verify

:question: Issue duplicate status

Team chose to mark this issue as a duplicate of another issue (as explained in the Team's response above)

• [ ] I disagree

Reason for disagreement: [replace this with your explanation]

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## :question: Issue response Team chose [`response.NotInScope`] - [x] I disagree **Reason for disagreement:** There can be tutors from outside nus as well so does not have to be EXXXXXXX email

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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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