Excellent : un article sur les formes admissibles d'adresses emails, et la stratégie pour les valider a priori.
Shorter :
If you have a well laid-out form with a label that says “email”, and the user enters an ‘@’ symbol somewhere, then it’s safe to say they understood that they were supposed to be entering an email address. Easy.
via : https://twitter.com/WalterStephanie/status/774159236695597056