Formal Emails in French: 4 Traps That Instantly Reveal You're Not a Native

I've read thousands of learner emails over the years, and the same four traps show up almost every time. The grammar is fine, the vocabulary is fine — and yet the message screams "foreigner". Why? Because French business writing has its own etiquette, and it lives in the small phrases: Madame, Monsieur,

, . Get those wrong and even a perfect sentence feels off. Let's fix the four big ones.

Trap 1: The greeting that's too friendly

In English we happily open with "Hi Sarah,". In French, dropping a first name into a formal opening is a red flag. The safe, native default is Madame, Monsieur, — no name, a comma, then a new line. If you know the person's title, Madame or Monsieur alone works. Save Bonjour for people you actually know.

Madame, Monsieur,

Bonjour Madame Dupont,

Trap 2: Tu or vous — pick one and stay there

This is the trap that catches even advanced learners. In a formal email you use vous for one person, and every possessive follows: votre demande,

, . One stray tu and the whole register collapses. Also watch the verb endings — vous avez, never vous as.

votre demande

pourriez-vous m'indiquer

Trap 3: Requests that sound like orders

English "I want to know" translates badly as Je veux savoir — it lands like a demand. French softens requests with the conditional and a polite formula. The magic opener is Je me permets de vous écrire for a first contact, and Je souhaiterais for what you want. Then hand the action over gently: Pourriez-vous… ?

Je souhaiterais savoir

Je me permets de vous écrire

Trap 4: The sign-off that undoes everything