Patrón de validación de correo electrónico Angular
pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,3}$"
Grieving Gharial
pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,3}$"
<input name="officialEmail" [ngModel]="user.officialEmail" required [pattern]="emailPattern" #offEmail="ngModel">