# Localization (/guides/localization)

Localization in Plunk allows you to configure the language of the unsubscribe footer and contact-facing pages (subscribe, unsubscribe, manage) to better suit your audience.

## Configuring Localization

You can set the default language for your project in the project settings.

## Overriding language per contact

You can override the default language for individual contacts by setting the `locale` field in the contact data. This field should contain a valid [ISO 639](https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes) language code (e.g., 'en' for English, 'fr' for French, 'es' for Spanish).

When sending emails, Plunk will use the contact's specified language if available; otherwise, it will fall back to the project's default language.