feat(smtp): add a precious SMTP test for admin only

src/application/dtos/settings_dto.rs

@@ -229,3 +229,55 @@ pub struct VerifyMigrationDto {
     /// Number of random blobs to sample-check (default: 100).
     pub sample_size: Option<usize>,
 }
+
+// ============================================================================
+// SMTP Settings DTOs (Admin Panel)
+// ============================================================================
+
+/// Read-only SMTP info shown on the admin SMTP page. SMTP configuration
+/// is sourced exclusively from environment variables — these fields are
+/// for display only and any change has to happen by updating the env
+/// and restarting the server.
+#[derive(Debug, Serialize, Deserialize, ToSchema)]
+pub struct SmtpInfoDto {
+    /// Whether `OXICLOUD_SMTP_HOST` is set and SMTP construction succeeded.
+    pub enabled: bool,
+    /// `OXICLOUD_SMTP_HOST`. Empty string when unset.
+    pub host: String,
+    /// `OXICLOUD_SMTP_PORT`. Default 587.
+    pub port: u16,
+    /// Transport encryption mode: `"starttls"`, `"tls"`, or `"none"`.
+    pub tls: String,
+    /// `OXICLOUD_SMTP_FROM` mailbox. Empty when unset.
+    pub from: String,
+    /// `<set>` if a SASL user is configured, `<anon>` otherwise.
+    /// Never echoes the username — admins compare against the
+    /// runtime config without having to look in `.env`.
+    pub user_state: &'static str,
+}
+
+/// Request body for `POST /api/admin/smtp/test`: send a hardcoded
+/// diagnostic email to the given recipient.
+#[derive(Debug, Serialize, Deserialize, ToSchema)]
+pub struct SendSmtpTestDto {
+    pub to: String,
+}
+
+/// Result of a `POST /api/admin/smtp/test` invocation. `success=true`
+/// carries the SMTP server's response code + first reply line; on
+/// failure the relevant error message goes in `error`. Always 200 OK
+/// so the frontend can render both outcomes in one place — the SMTP
+/// failure is a normal operational state, not an HTTP error.
+#[derive(Debug, Serialize, Deserialize, ToSchema)]
+pub struct SmtpTestResultDto {
+    pub success: bool,
+    /// SMTP status code (e.g. 250). Only set on success.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub code: Option<u16>,
+    /// First line of the SMTP server's reply. Only set on success.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub message: Option<String>,
+    /// Human-readable error message. Only set on failure.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub error: Option<String>,
+}

src/application/ports/email_sender.rs

@@ -39,6 +39,22 @@ pub struct EmailMessage {
     pub html_body: Option<String>,
 }
 
+/// What the SMTP server said when it accepted the message. Surfaced
+/// through the trait so the admin "test email" endpoint can show the
+/// response to operators; the invitation flow generally ignores it but
+/// logs it via `tracing`.
+#[derive(Debug, Clone)]
+pub struct EmailSendOutcome {
+    /// SMTP status code from the final response (e.g. `250` for "OK").
+    /// Encoded as a `u16` because that's the natural range; lettre
+    /// returns it as a structured enum and we collapse it here.
+    pub code: u16,
+    /// First line of the server's reply (e.g. `"2.0.0 OK"`, or the
+    /// upstream provider's queue-id banner). Best-effort; if the
+    /// response was empty (unusual) this is the empty string.
+    pub message: String,
+}
+
 /// Port for sending transactional email.
 ///
 /// Implementations must:
@@ -54,10 +70,12 @@ pub struct EmailMessage {
 /// `dyn` patterns at the service boundary).
 #[async_trait]
 pub trait EmailSender: Send + Sync + 'static {
-    /// Send one message. Returns `Ok(())` only after the SMTP server has
-    /// accepted the message (i.e. after the final `.` or LMTP DATA close).
+    /// Send one message. Returns `Ok(outcome)` only after the SMTP server
+    /// has accepted the message (i.e. after the final `.` or LMTP DATA
+    /// close). The outcome carries the SMTP response code + first line
+    /// so diagnostic surfaces (admin "test email" page) can show it.
     /// Caller may run this fire-and-forget via `tokio::spawn` if response
     /// timing matters (e.g. magic-link invite path defending against
-    /// enumeration via latency).
-    async fn send(&self, message: EmailMessage) -> Result<(), DomainError>;
+    /// enumeration via latency); the outcome is then logged-only.
+    async fn send(&self, message: EmailMessage) -> Result<EmailSendOutcome, DomainError>;
 }

src/infrastructure/services/smtp_email_sender.rs

@@ -28,7 +28,7 @@ use lettre::transport::smtp::AsyncSmtpTransport;
 use lettre::transport::smtp::authentication::Credentials;
 use lettre::{AsyncTransport, Message, Tokio1Executor};
 
-use crate::application::ports::email_sender::{EmailMessage, EmailSender};
+use crate::application::ports::email_sender::{EmailMessage, EmailSendOutcome, EmailSender};
 use crate::common::config::{SmtpConfig, SmtpTlsMode};
 use crate::common::errors::DomainError;
 
@@ -92,7 +92,7 @@ impl SmtpEmailSender {
 
 #[async_trait]
 impl EmailSender for SmtpEmailSender {
-    async fn send(&self, message: EmailMessage) -> Result<(), DomainError> {
+    async fn send(&self, message: EmailMessage) -> Result<EmailSendOutcome, DomainError> {
         let to: Mailbox = message.to.parse().map_err(|e| {
             DomainError::new(
                 crate::common::errors::ErrorKind::InvalidInput,
@@ -132,11 +132,23 @@ impl EmailSender for SmtpEmailSender {
             DomainError::internal_error("SmtpEmailSender", format!("build message: {}", e))
         })?;
 
-        self.transport
-            .send(built)
-            .await
-            .map_err(|e| DomainError::internal_error("SmtpEmailSender", format!("send: {}", e)))?;
+        let response =
+            self.transport.send(built).await.map_err(|e| {
+                DomainError::internal_error("SmtpEmailSender", format!("send: {}", e))
+            })?;
 
-        Ok(())
+        // Lettre's `Response::code()` returns a structured `Code`; its
+        // `Display` impl is the three-digit form ("250", "451", …).
+        let code: u16 = response.code().to_string().parse().unwrap_or(0);
+        // `message()` is `Iterator<Item = &String>`; take the first
+        // line (the rest are typically multi-line EHLO continuations,
+        // not interesting for a confirmation).
+        let message = response
+            .message()
+            .next()
+            .map(str::to_string)
+            .unwrap_or_default();
+
+        Ok(EmailSendOutcome { code, message })
     }
 }

src/interfaces/api/handlers/admin_handler.rs

@@ -8,9 +8,9 @@ use axum::{
 
 use crate::application::dtos::settings_dto::{
     AdminCreateUserDto, AdminResetPasswordDto, DashboardStatsDto, ListUsersQueryDto,
-    MigrationStateDto, SaveOidcSettingsDto, SaveStorageSettingsDto, StartMigrationDto,
-    TestOidcConnectionDto, TestStorageConnectionDto, UpdateUserActiveDto, UpdateUserQuotaDto,
-    UpdateUserRoleDto, VerifyMigrationDto,
+    MigrationStateDto, SaveOidcSettingsDto, SaveStorageSettingsDto, SendSmtpTestDto, SmtpInfoDto,
+    SmtpTestResultDto, StartMigrationDto, TestOidcConnectionDto, TestStorageConnectionDto,
+    UpdateUserActiveDto, UpdateUserQuotaDto, UpdateUserRoleDto, VerifyMigrationDto,
 };
 use crate::common::di::AppState;
 use crate::interfaces::errors::AppError;
@@ -58,6 +58,9 @@ pub fn admin_routes() -> Router<Arc<AppState>> {
         .route("/settings/registration", put(set_registration_setting))
         // Audio metadata
         .route("/audio/metadata/reextract", post(reextract_audio_metadata))
+        // SMTP diagnostics
+        .route("/smtp/info", get(get_smtp_info))
+        .route("/smtp/test", post(send_smtp_test))
 }
 
 /// Validate JWT and require admin role. Returns (user_id, role).
@@ -1208,3 +1211,154 @@ async fn reextract_audio_metadata(
         "failed": result.failed,
     })))
 }
+
+// ─────────────────────────────────────────────────────
+// SMTP diagnostics
+// ─────────────────────────────────────────────────────
+//
+// The SMTP backend is configured exclusively via OXICLOUD_SMTP_* env
+// vars (see docs/config/env.md). The admin UI uses these two endpoints
+// purely for diagnostics:
+//   - `get_smtp_info` shows the current runtime config (read-only — no
+//     write endpoint exists; operators edit `.env` and restart).
+//   - `send_smtp_test` sends a hardcoded confirmation mail to a
+//     recipient supplied by the admin, returning the SMTP server's
+//     response so the operator can correlate it with their relay logs.
+
+/// GET /api/admin/smtp/info — read-only view of the running SMTP config.
+#[utoipa::path(
+    get,
+    path = "/api/admin/smtp/info",
+    responses(
+        (status = 200, description = "Current SMTP settings", body = SmtpInfoDto),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Admin required"),
+    ),
+    security(("bearerAuth" = [])),
+    tag = "admin"
+)]
+async fn get_smtp_info(
+    State(state): State<Arc<AppState>>,
+    headers: HeaderMap,
+) -> Result<impl IntoResponse, AppError> {
+    admin_guard(&state, &headers).await?;
+
+    let smtp = &state.core.config.smtp;
+    let info = SmtpInfoDto {
+        enabled: smtp.is_enabled() && state.email_sender.is_some(),
+        host: smtp.host.clone(),
+        port: smtp.port,
+        tls: match smtp.tls {
+            crate::common::config::SmtpTlsMode::Starttls => "starttls".to_string(),
+            crate::common::config::SmtpTlsMode::Tls => "tls".to_string(),
+            crate::common::config::SmtpTlsMode::None => "none".to_string(),
+        },
+        from: smtp.from.clone(),
+        user_state: if smtp.user.is_empty() {
+            "<anon>"
+        } else {
+            "<set>"
+        },
+    };
+
+    Ok(Json(info))
+}
+
+/// POST /api/admin/smtp/test — send a diagnostic email to `dto.to`.
+///
+/// Returns 200 regardless of SMTP outcome; the body's `success` flag
+/// + `code`/`message` (or `error`) tell the frontend what to render.
+/// This keeps SMTP-level failures (4xx/5xx replies, connection
+/// timeouts) as ordinary diagnostic data rather than HTTP errors.
+#[utoipa::path(
+    post,
+    path = "/api/admin/smtp/test",
+    request_body = SendSmtpTestDto,
+    responses(
+        (status = 200, description = "Send attempt completed", body = SmtpTestResultDto),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Admin required"),
+        (status = 503, description = "SMTP not configured"),
+    ),
+    security(("bearerAuth" = [])),
+    tag = "admin"
+)]
+async fn send_smtp_test(
+    State(state): State<Arc<AppState>>,
+    headers: HeaderMap,
+    Json(dto): Json<SendSmtpTestDto>,
+) -> Result<impl IntoResponse, AppError> {
+    let (admin_id, _) = admin_guard(&state, &headers).await?;
+
+    let recipient = dto.to.trim().to_string();
+    if recipient.is_empty() {
+        return Err(AppError::bad_request("Recipient address is required"));
+    }
+
+    let sender = state.email_sender.as_ref().ok_or_else(|| {
+        AppError::new(
+            StatusCode::SERVICE_UNAVAILABLE,
+            "SMTP is not configured (set OXICLOUD_SMTP_HOST in .env to enable)",
+            "ServiceUnavailable",
+        )
+    })?;
+
+    let message = crate::application::ports::email_sender::EmailMessage {
+        to: recipient.clone(),
+        subject: "OxiCloud SMTP test".to_string(),
+        text_body: format!(
+            "This is a diagnostic message sent from your OxiCloud instance.\n\
+             \n\
+             If you are reading this, your SMTP relay accepted the message — \
+             outbound email is wired up correctly.\n\
+             \n\
+             Triggered by admin user id {} on {}.\n",
+            admin_id,
+            chrono::Utc::now().to_rfc3339(),
+        ),
+        html_body: None,
+    };
+
+    tracing::info!(
+        target: "audit",
+        event = "smtp.test_send",
+        admin_id = %admin_id,
+        recipient = %recipient,
+    );
+
+    let result = match sender.send(message).await {
+        Ok(outcome) => {
+            tracing::info!(
+                target: "audit",
+                event = "smtp.test_send_ok",
+                admin_id = %admin_id,
+                recipient = %recipient,
+                code = outcome.code,
+                message = %outcome.message,
+            );
+            SmtpTestResultDto {
+                success: true,
+                code: Some(outcome.code),
+                message: Some(outcome.message),
+                error: None,
+            }
+        }
+        Err(e) => {
+            tracing::warn!(
+                target: "audit",
+                event = "smtp.test_send_failed",
+                admin_id = %admin_id,
+                recipient = %recipient,
+                error = %e.message,
+            );
+            SmtpTestResultDto {
+                success: false,
+                code: None,
+                message: None,
+                error: Some(e.message),
+            }
+        }
+    };
+
+    Ok(Json(result))
+}

static/admin.html

@@ -61,6 +61,9 @@
                     <button class="admin-tab" id="tab-btn-storage">
                         <i class="fas fa-database"></i> <span data-i18n="admin.tab_storage">Storage</span>
                     </button>
+                    <button class="admin-tab" id="tab-btn-smtp">
+                        <i class="fas fa-envelope"></i> <span data-i18n="admin.tab_smtp">SMTP</span>
+                    </button>
                 </div>
 
                 <div id="tab-dashboard" class="tab-content active">
@@ -609,6 +612,70 @@
                         </div>
                     </div>
                 </div>
+
+                <!-- ════════ SMTP tab ════════ -->
+                <div id="tab-smtp" class="tab-content">
+                    <div class="admin-card">
+                        <h2>
+                            <i class="fas fa-envelope"></i> <span data-i18n="admin.smtp_title">Outbound Email (SMTP)</span>
+                        </h2>
+                        <p class="muted" data-i18n="admin.smtp_intro">
+                            SMTP is configured exclusively via environment variables (OXICLOUD_SMTP_*). The values below are read from the running server — to change them, edit the environment and restart OxiCloud.
+                        </p>
+
+                        <table class="smtp-info-table">
+                            <tbody>
+                                <tr>
+                                    <th data-i18n="admin.smtp_enabled_label">Status</th>
+                                    <td id="smtp-enabled">—</td>
+                                </tr>
+                                <tr>
+                                    <th>OXICLOUD_SMTP_HOST</th>
+                                    <td id="smtp-host">—</td>
+                                </tr>
+                                <tr>
+                                    <th>OXICLOUD_SMTP_PORT</th>
+                                    <td id="smtp-port">—</td>
+                                </tr>
+                                <tr>
+                                    <th>OXICLOUD_SMTP_TLS</th>
+                                    <td id="smtp-tls">—</td>
+                                </tr>
+                                <tr>
+                                    <th>OXICLOUD_SMTP_FROM</th>
+                                    <td id="smtp-from">—</td>
+                                </tr>
+                                <tr>
+                                    <th>OXICLOUD_SMTP_USER</th>
+                                    <td id="smtp-user-state">—</td>
+                                </tr>
+                            </tbody>
+                        </table>
+
+                        <h3 class="mt-14">
+                            <i class="fas fa-paper-plane"></i> <span data-i18n="admin.smtp_test_title">Send a test email</span>
+                        </h3>
+                        <p class="muted" data-i18n="admin.smtp_test_intro">
+                            Sends a hardcoded diagnostic message to the recipient below and reports the SMTP server's response so you can correlate it with your relay logs.
+                        </p>
+
+                        <div class="form-group">
+                            <label for="smtp-test-to" data-i18n="admin.smtp_test_to">Recipient address</label>
+                            <input
+                                id="smtp-test-to"
+                                type="email"
+                                placeholder="alice@example.com"
+                                autocomplete="off"
+                            />
+                        </div>
+
+                        <button id="btn-smtp-test" class="btn btn-primary">
+                            <i class="fas fa-paper-plane"></i> <span data-i18n="admin.smtp_send_test">Send test email</span>
+                        </button>
+
+                        <div id="smtp-test-result" class="alert" style="display:none; margin-top:14px;"></div>
+                    </div>
+                </div>
             </div>
         </div>
 

static/css/views/admin.css

@@ -970,6 +970,45 @@ details[open] summary {
     color: var(--color-text-heading);
 }
 
+/* Simple two-column "key: value" table used by the SMTP admin panel.
+   Designed for the SMTP-info read-only view where the values
+   (hostnames, full mailboxes, status strings) are too long for the
+   centered stat-card layout above. */
+.smtp-info-table {
+    width: 100%;
+    border-collapse: collapse;
+    margin-bottom: 24px;
+    background: var(--color-bg-hover);
+    border: 1px solid var(--color-border);
+    border-radius: 12px;
+    overflow: hidden;
+}
+.smtp-info-table th,
+.smtp-info-table td {
+    padding: 10px 14px;
+    text-align: left;
+    border-bottom: 1px solid var(--color-border);
+    vertical-align: middle;
+    word-break: break-word;
+}
+.smtp-info-table tr:last-child th,
+.smtp-info-table tr:last-child td {
+    border-bottom: none;
+}
+.smtp-info-table th {
+    font-size: 0.85rem;
+    font-weight: 600;
+    color: var(--color-text-secondary);
+    width: 220px;
+    white-space: nowrap;
+    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+}
+.smtp-info-table td {
+    color: var(--color-text-heading);
+    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+    font-size: 0.95rem;
+}
+
 .storage-backend-selector {
     display: flex;
     gap: 12px;

static/js/views/admin/admin.js

@@ -154,6 +154,7 @@ function switchTab(name, el) {
     if (name === 'users') loadUsers();
     if (name === 'dashboard') loadDashboard();
     if (name === 'storage') loadStorage();
+    if (name === 'smtp') loadSmtp();
 }
 
 async function loadDashboard() {
@@ -1158,6 +1159,110 @@ function showAccessDenied() {
     showElement('access-denied');
 }
 
+/* ── SMTP tab ──────────────────────────────────────────────────────────── */
+
+/**
+ * Fetch the runtime SMTP info and render the read-only status grid.
+ * Configuration is sourced exclusively from `OXICLOUD_SMTP_*` env vars;
+ * this view is purely diagnostic — no save path exists.
+ *
+ * @returns {Promise<void>}
+ */
+async function loadSmtp() {
+    try {
+        const resp = await fetch(`${API}/admin/smtp/info`, {
+            headers: headers(),
+            credentials: 'same-origin'
+        });
+        if (!resp.ok) return;
+        /** @type {{enabled: boolean, host: string, port: number, tls: string, from: string, user_state: string}} */
+        const info = await resp.json();
+
+        const enabledEl = document.getElementById('smtp-enabled');
+        if (enabledEl) {
+            enabledEl.textContent = info.enabled ? i18n.t('admin.smtp_enabled') || 'Enabled' : i18n.t('admin.smtp_disabled') || 'Disabled (host unset)';
+            enabledEl.style.color = info.enabled ? 'var(--success)' : 'var(--text-muted)';
+        }
+        const setText = (/** @type {string} */ id, /** @type {string} */ value) => {
+            const el = document.getElementById(id);
+            if (el) el.textContent = value || '—';
+        };
+        setText('smtp-host', info.host);
+        setText('smtp-port', String(info.port));
+        setText('smtp-tls', info.tls);
+        setText('smtp-from', info.from);
+        setText('smtp-user-state', info.user_state);
+    } catch (e) {
+        console.error('Failed to load SMTP info', e);
+    }
+}
+
+/**
+ * Send a diagnostic test email through the configured SMTP relay.
+ * Backend always responds with 200 carrying `{success, code, message,
+ * error}` — SMTP-level failures are operational data, not HTTP errors.
+ *
+ * @returns {Promise<void>}
+ */
+async function sendSmtpTest() {
+    const input = /** @type {HTMLInputElement | null} */ (document.getElementById('smtp-test-to'));
+    const resultEl = document.getElementById('smtp-test-result');
+    const btn = /** @type {HTMLButtonElement | null} */ (document.getElementById('btn-smtp-test'));
+    if (!input || !resultEl) return;
+
+    const to = input.value.trim();
+    if (!to) {
+        resultEl.className = 'alert alert-error';
+        resultEl.style.display = 'block';
+        resultEl.textContent = i18n.t('admin.smtp_test_missing_to') || 'Enter a recipient address.';
+        return;
+    }
+
+    if (btn) btn.disabled = true;
+    resultEl.className = 'alert alert-info';
+    resultEl.style.display = 'block';
+    resultEl.textContent = i18n.t('admin.smtp_sending') || 'Sending…';
+
+    try {
+        const resp = await fetch(`${API}/admin/smtp/test`, {
+            method: 'POST',
+            headers: headers(),
+            credentials: 'same-origin',
+            body: JSON.stringify({ to })
+        });
+        if (resp.status === 503) {
+            resultEl.className = 'alert alert-error';
+            resultEl.textContent = i18n.t('admin.smtp_not_configured') || 'SMTP is not configured on this server.';
+            return;
+        }
+        if (!resp.ok) {
+            resultEl.className = 'alert alert-error';
+            resultEl.textContent = `HTTP ${resp.status}: ${await resp.text()}`;
+            return;
+        }
+        /** @type {{success: boolean, code?: number, message?: string, error?: string}} */
+        const data = await resp.json();
+        if (data.success) {
+            resultEl.className = 'alert alert-success';
+            const codeLabel = i18n.t('admin.smtp_server_code') || 'Server replied';
+            resultEl.innerHTML =
+                `<strong>${escapeHtml(i18n.t('admin.smtp_sent') || 'Test email sent.')}</strong><br>` +
+                `${escapeHtml(codeLabel)}: <code>${data.code ?? ''} ${escapeHtml(data.message ?? '')}</code>`;
+        } else {
+            resultEl.className = 'alert alert-error';
+            const failLabel = i18n.t('admin.smtp_send_failed') || 'Send failed.';
+            resultEl.innerHTML = `<strong>${escapeHtml(failLabel)}</strong><br>` + `<code>${escapeHtml(data.error ?? 'unknown error')}</code>`;
+        }
+    } catch (e) {
+        resultEl.className = 'alert alert-error';
+        resultEl.textContent = i18n.t('admin.error_network', {
+            message: /** @type {Error} */ (e).message
+        });
+    } finally {
+        if (btn) btn.disabled = false;
+    }
+}
+
 /* ── Apply i18n when translations load / change ── */
 document.addEventListener('translationsLoaded', () => {
     i18n.translatePage();
@@ -1186,6 +1291,11 @@ document.getElementById('tab-btn-oidc').addEventListener('click', function () {
 document.getElementById('tab-btn-storage').addEventListener('click', function () {
     switchTab('storage', this);
 });
+document.getElementById('tab-btn-smtp').addEventListener('click', function () {
+    switchTab('smtp', this);
+});
+
+document.getElementById('btn-smtp-test').addEventListener('click', sendSmtpTest);
 
 document.getElementById('ds-registration').addEventListener('change', function () {
     toggleRegistration(/** @type {HTMLInputElement} */ (this).checked);

static/locales/en.json

@@ -649,7 +649,23 @@
         "migration_verify_passed": "Verification passed",
         "migration_verify_failed": "Verification failed",
         "migration_failed_blobs": "failed blobs",
-        "testing": "Testing…"
+        "testing": "Testing…",
+        "tab_smtp": "SMTP",
+        "smtp_title": "Outbound Email (SMTP)",
+        "smtp_intro": "SMTP is configured exclusively via environment variables (OXICLOUD_SMTP_*). The values below are read from the running server — to change them, edit the environment and restart OxiCloud.",
+        "smtp_enabled_label": "Status",
+        "smtp_enabled": "Enabled",
+        "smtp_disabled": "Disabled (host unset)",
+        "smtp_test_title": "Send a test email",
+        "smtp_test_intro": "Sends a hardcoded diagnostic message to the recipient below and reports the SMTP server's response so you can correlate it with your relay logs.",
+        "smtp_test_to": "Recipient address",
+        "smtp_send_test": "Send test email",
+        "smtp_sending": "Sending…",
+        "smtp_sent": "Test email sent.",
+        "smtp_send_failed": "Send failed.",
+        "smtp_server_code": "Server replied",
+        "smtp_test_missing_to": "Enter a recipient address.",
+        "smtp_not_configured": "SMTP is not configured on this server."
     },
     "profile": {
         "page_title": "Profile",

static/locales/fr.json

@@ -649,7 +649,23 @@
         "migration_verify_passed": "Vérification réussie",
         "migration_verify_failed": "Échec de la vérification",
         "migration_failed_blobs": "Blobs échoués",
-        "testing": "Test en cours..."
+        "testing": "Test en cours...",
+        "tab_smtp": "SMTP",
+        "smtp_title": "E-mail sortant (SMTP)",
+        "smtp_intro": "Le SMTP est configuré exclusivement via les variables d'environnement (OXICLOUD_SMTP_*). Les valeurs ci-dessous proviennent du serveur en cours d'exécution — pour les modifier, éditez l'environnement et redémarrez OxiCloud.",
+        "smtp_enabled_label": "État",
+        "smtp_enabled": "Activé",
+        "smtp_disabled": "Désactivé (hôte non défini)",
+        "smtp_test_title": "Envoyer un e-mail de test",
+        "smtp_test_intro": "Envoie un message de diagnostic au destinataire ci-dessous et affiche la réponse du serveur SMTP afin que vous puissiez la corréler avec les journaux de votre relais.",
+        "smtp_test_to": "Adresse du destinataire",
+        "smtp_send_test": "Envoyer l'e-mail de test",
+        "smtp_sending": "Envoi…",
+        "smtp_sent": "E-mail de test envoyé.",
+        "smtp_send_failed": "Échec de l'envoi.",
+        "smtp_server_code": "Le serveur a répondu",
+        "smtp_test_missing_to": "Veuillez saisir une adresse de destinataire.",
+        "smtp_not_configured": "Le SMTP n'est pas configuré sur ce serveur."
     },
     "profile": {
         "page_title": "Profil",

static/sw.js

@@ -1,6 +1,6 @@
 // OxiCloud Service Worker
 // FIXME: generate cache name according build ?
-const CACHE_NAME = 'oxicloud-cache-v23';
+const CACHE_NAME = 'oxicloud-cache-v24';
 
 // Only cache static assets — NOT HTML files.
 // HTML files are served network-first so browsers always get the latest