Mail notifs in French

[Gredin67]

    # Subject to use to notify about one message from one or more user(s) in a
    # room which has a name.
    message_from_person_in_room: "[%(app)s] Vous avez un message de %(person)s dans le salon %(room)s..."
    #
    # Subject to use to notify about one message from one or more user(s) in a
    # room which doesn't have a name.
    message_from_person: "[%(app)s] Vous avez un message de %(person)s..."
    #
    # Subject to use to notify about multiple messages from one or more users in
    # a room which doesn't have a name.
    messages_from_person: "[%(app)s] Vous avez un message de %(person)s..."
    #
    # Subject to use to notify about multiple messages in a room which has a
    # name.
    messages_in_room: "[%(app)s] Vous avez des messages dans le salon %(room)s..."
    #
    # Subject to use to notify about multiple messages in multiple rooms.
    messages_in_room_and_others: "[%(app)s] Vous avez des messages dans le salon %(room)s et d'autres..."
    #
    # Subject to use to notify about multiple messages from multiple persons in
    # multiple rooms. This is similar to the setting above except it's used when
    # the room in which the notification was triggered has no name.
    messages_from_person_and_others: "[%(app)s] Vous avez des messages de %(person)s et d'autres..."
    #
    # Subject to use to notify about an invite to a room which has a name.
    invite_from_person_to_room: "[%(app)s] %(person)s vous a invité à rejoindre le salon %(room)s..."
    #
    # Subject to use to notify about an invite to a room which doesn't have a
    # name.
    invite_from_person: "[%(app)s] %(person)s vous a invité à discuter..."

    # Subject for emails related to account administration.
    #
    # On top of the '%(app)s' placeholder, these one can use the
    # '%(server_name)s' placeholder, which will be replaced by the value of the
    # 'server_name' setting in your Synapse configuration.
    #
    # Subject to use when sending a password reset email.
    password_reset: "[%(app)s] Réinitialisation du mot-de-passe"
    #
    # Subject to use when sending a verification email to assert an address's
    # ownership.
    email_validation: "[%(app)s] Validez votre e-mail"

[Gredin67]

I also set app_name: chat.domain.tld, to designate the Matrix element-web installed on the local server.

[Josue-T]

Well in design term it's quite bad as y the way we can't have multiple language by homeserver.

We can add all text in config panel but it solve partially the issue for multilang homeserver.