emailRegex top-level constant
String
const emailRegex
Valid Email format Regex
Implementation
const emailRegex = r'^(?=.{1,64}@)([a-zA-Z\d]+([\.\-_]?[a-zA-Z\d]+)*)@(?=.{4,63}$)([a-zA-Z\d]+([\.\-]?[a-zA-Z\d]+)*\.[a-zA-Z\d]{2,})$';