Email notifications are not localized and are always sent in English

[lgerard19]

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Steps to reproduce

1. Configure the user account, the resource account and the admin account with the same non-English language (French in my case).
2. Create a room booking.
3. Wait for the booking confirmation email.

Expected behaviour

The email subject and body should be sent in the recipient's configured language (French in my case), just like the RoomVox user interface.

Email notifications should use the existing Nextcloud localization (IL10N) system.

Actual behaviour

The booking confirmation email is always sent in English.

Example:

Subject

Booking confirmed: Room A — Test

Body

Your booking has been confirmed.

Room: Room A
Event: Test
...

Additional investigation

• RoomVox version: 1.2.1
• Nextcloud version: 33.0.4
• PHP version: 8.4.21
• All involved accounts (user, resource and admin) are configured in French.
• The RoomVox web interface is correctly translated into French.
• The project already contains translation files such as:
  • l10n/fr.json
  • l10n/de.json
  • l10n/nl.json

However, the email texts are hardcoded in:

lib/Service/MailService.php

For example:

return "Your booking has been confirmed.\n\n";

It looks like email notifications are not using the existing Nextcloud localization (IL10N) system.

Server configuration

Web server: Apache 2.4.67 (Debian)

Database: MariaDB

PHP version: 8.4.21

Nextcloud version: 33.0.4

RoomVox version: 1.2.1

Deployment: Docker

Browser

Not applicable (server-side email generation).

[Rikdekker]

The mechanism is fixed in 1.3.0 — but the French translations do not exist yet, so I am leaving this open until they land. Details below.

Your analysis was exactly right: MailService used no IL10N at all. All 14 notification types built their subject and body from hardcoded English, which is why a French interface still produced English mail.

What changed

Every string now resolves through Nextcloud’s translation system, and the language is chosen per recipient rather than from the server default — organizer, room managers and admin can each receive the same booking in their own language, read from their Nextcloud account. External addresses have no account to read a preference from and fall back to the instance default; an address matching more than one account is treated as unknown rather than guessed.

Values are substituted through placeholders instead of being interpolated, so translators receive whole sentences rather than fragments.

Why you will still see English for now

RoomVox was on a hand-maintained translation setup. It has been migrated to the standard POT workflow and submitted for onboarding onto the Nextcloud community translation platform (nextcloud/docker-ci#986). The 46 new email strings therefore have no French translation yet, and untranslated text falls back to English.

Once the resource is live and translators pick them up, the emails become French with no configuration change and no new release needed — the machinery is verified working: the same MailService already renders "Ruimtes" / "Räume" / "Salles" for the strings that are translated.

If you would like to translate the French strings yourself, that is very welcome — I will comment here with the Transifex link as soon as the resource is available.

Keeping this open until French actually arrives.