French Phrase
C'est quoi ton numéro ou ton mail ?
Meaning
Literally, "What is your number or your mail?" In everyday French it is used to ask someone for a phone number or an email address, usually in a casual setting.
When to use
Use this phrase with friends, classmates, or colleagues you already know well. In a professional or formal context you would switch to a more polite formulation such as "Quel est votre numéro de téléphone ou votre adresse e‑mail ?".
✦Grammar Breakdown
C'estquoitonnumérooutonmail?
C'est quoi
The informal way to ask "what is...". It uses the contraction "c'est" (ce + est) followed by the interrogative "quoi".
Possessive adjective (ton)
"ton" agrees with a masculine singular noun (numéro, mail). It means "your" (informal, singular).
Or (ou)
The coordinating conjunction "ou" means "or" and links two alternatives.
Mail vs adresse e‑mail
"mail" is a colloquial borrowing from English; in formal contexts you would say "adresse e‑mail".
🗨In Conversation
C'est quoi ton numéro ou ton mail ?
What's your phone number or email?
Mon numéro, c'est 06 12 34 56 78, et mon mail, c'est jean.dupont@example.com.
My number is 06 12 34 56 78, and my email is jean.dupont@example.com.
✕Common Mistakes
C'est quel ton numéro ?
The structure "c'est quel" is ungrammatical; use "c'est quoi" for informal questions or "quel est" for formal ones.
C'est quoi ton mail ?
In formal contexts "adresse e‑mail" or "courriel" is preferred over the anglicism "mail".
C'est quoi ton numéro ou mail ?
When offering two alternatives, the article or possessive should be repeated for clarity, as done here. Omitting the second "ton" can sound sloppy.
↔Alternatives
Quel est ton numéro ou ton adresse e‑mail ?
What is your phone number or your email address?
Peux‑tu me donner ton numéro ou ton e‑mail ?
Can you give me your number or your email?
Donne‑moi ton numéro ou ton mail, s'il te plaît.
Give me your number or your email, please.
Cultural Tip
In France, asking for contact details is common after a first meeting, but the level of formality matters. "C'est quoi ton numéro ou ton mail ?" is perfectly natural among peers, but in a business setting you should use "Quel est votre numéro de téléphone ou votre adresse e‑mail ?" and add "s'il vous plaît" for politeness. Also, note that "mail" is more popular with younger speakers; older generations may prefer "courriel" (especially in Quebec).