Quel est ton email ?
puis-je avoir votre email
enamel is email in French. There is a little dash above the e and email is pronounced ('d, *en)
Your email address stays the same no matter which language it is written in.
Pouvez-vous vérifier votre email?
an email should properly be called 'un courriel' (for 'courrier electronique') or 'un mèl' in French. But it is still common to hear or read about 'mail' or 'email'.
Je t'ai envoyé l'adresse email
no
It's French, and says: email me back/by return
avez-vous l'e-mail?
the symbol "@" is called 'arobase' in French and spelled either 'arobase' or 'at'