Add validation for "Email address" field

[veronicamacovei]

Website Page - https://www.adtechmedia.io/calculator-result/

Email address field
Actual result: This field is valid when I insert:

• Email with a dot on the first position

• Dot is missing from email

• Allows other characters except (digit, underscore, and dash)

• Allows double dots

Expected result : Email with be invalid if:

• @ is not present
• mysite@.com.my [ (Top Level domain) can not start with dot "." ]
• @you.me.net [ No character before @ ]
• .mysite@mysite.org [ an email should not start with "." ]
• mysite()*@gmail.com [ here the regular expression only allows character, digit, underscore, and dash ]
• mysite..1234@yahoo.com [double dots are not allowed]
• mysite@gmail [Dot is missing]

[avozicov]

Test Passed for all described scenarios
Notification message is triggered when request is accepted with invalid email