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README.md

@@ -88,7 +88,7 @@ When you click **“Bereinigung starten / Start cleanup”** a cleanup job is cr
 
 ### The three checkboxes explained
 **Dry run (keine Änderungen)**  
-Runs the full scan and logs what *would* happen, but **does not move/delete/unsubscribe** any mail. Useful for testing rules safely.
+Runs the full scan and logs what *would* happen, but **does not move/delete/unsubscribe** any mail and **does not send unsubscribe emails**. Useful for testing rules safely.
 
 **Unsubscribe aktiv**  
 Enables `List‑Unsubscribe` handling.  

backend/src/mail/cleanup.ts

@@ -4,7 +4,7 @@ import { createImapClient, fetchHeaders, listMailboxes } from "./imap.js";
 import { detectNewsletter } from "./newsletter.js";
 import { matchRules } from "./rules.js";
 import { unsubscribeFromHeader } from "./unsubscribe.js";
-import { applyGmailAction } from "./gmail.js";
+import { applyGmailAction, gmailClientForAccount } from "./gmail.js";
 
 export const runCleanup = async (cleanupJobId: string, mailboxAccountId: string) => {
   const account = await prisma.mailboxAccount.findUnique({ where: { id: mailboxAccountId } });
@@ -31,17 +31,70 @@ export const runCleanup = async (cleanupJobId: string, mailboxAccountId: string)
 
   await logJobEvent(cleanupJobId, "info", `Connecting to ${account.email}`);
 
-  const client = createImapClient(account);
-  await client.connect();
+  const isGmail = account.provider === "GMAIL";
+  const hasGmailOAuth = Boolean(account.oauthRefreshToken || account.oauthAccessToken);
 
+  let messages: {
+    uid: number;
+    subject?: string;
+    from?: string;
+    headers: Map<string, string>;
+    gmailMessageId?: string;
+  }[] = [];
+
+  let imapClient: ReturnType<typeof createImapClient> | null = null;
+
+  if (isGmail && hasGmailOAuth) {
+    const { gmail } = await gmailClientForAccount(account);
+    const list = await gmail.users.messages.list({
+      userId: "me",
+      labelIds: ["INBOX"],
+      maxResults: 300
+    });
+    const ids = list.data.messages?.map((msg) => msg.id).filter(Boolean) as string[] | undefined;
+    await logJobEvent(cleanupJobId, "info", `Found ${ids?.length ?? 0} Gmail messages`, 10);
+
+    if (ids?.length) {
+      const headersWanted = ["Subject", "From", "List-Id", "List-Unsubscribe", "List-Unsubscribe-Post", "Message-Id"];
+      for (const id of ids) {
+        const meta = await gmail.users.messages.get({
+          userId: "me",
+          id,
+          format: "metadata",
+          metadataHeaders: headersWanted
+        });
+        const headers = new Map<string, string>();
+        const payloadHeaders = meta.data.payload?.headers ?? [];
+        for (const header of payloadHeaders) {
+          if (!header.name || !header.value) continue;
+          headers.set(header.name.toLowerCase(), header.value);
+        }
+        messages.push({
+          uid: 0,
+          subject: headers.get("subject"),
+          from: headers.get("from"),
+          headers,
+          gmailMessageId: id
+        });
+      }
+    }
+  } else {
+    imapClient = createImapClient(account);
+    await imapClient.connect();
     try {
-    const mailboxes = await listMailboxes(client);
+      const mailboxes = await listMailboxes(imapClient);
       await logJobEvent(cleanupJobId, "info", `Found ${mailboxes.length} mailboxes`, 10);
 
       const targetMailbox = mailboxes.find((box) => /inbox/i.test(box.path))?.path ?? "INBOX";
       await logJobEvent(cleanupJobId, "info", `Scanning ${targetMailbox}`, 20);
 
-    const messages = await fetchHeaders(client, targetMailbox, 300, job.dryRun);
+      messages = await fetchHeaders(imapClient, targetMailbox, 300, job.dryRun);
+    } finally {
+      await imapClient.logout().catch(() => undefined);
+    }
+  }
+
+  try {
     let newsletterCount = 0;
     let processed = 0;
 
@@ -84,17 +137,21 @@ export const runCleanup = async (cleanupJobId: string, mailboxAccountId: string)
             continue;
           }
 
+          if (!imapClient) {
+            await logJobEvent(cleanupJobId, "info", "Skipping IMAP action: no IMAP client");
+          } else {
             if ((action.type === "MOVE" || action.type === "ARCHIVE" || action.type === "LABEL") && action.target) {
-            await client.mailboxCreate(action.target).catch(() => undefined);
-            await client.messageMove(msg.uid, action.target);
+              await imapClient.mailboxCreate(action.target).catch(() => undefined);
+              await imapClient.messageMove(msg.uid, action.target);
               await logJobEvent(cleanupJobId, "info", `Moved message ${msg.uid} to ${action.target}`);
             }
             if (action.type === "DELETE") {
-            await client.messageDelete(msg.uid);
+              await imapClient.messageDelete(msg.uid);
               await logJobEvent(cleanupJobId, "info", `Deleted message ${msg.uid}`);
             }
           }
         }
+      }
 
       if (job.unsubscribeEnabled) {
         const listUnsubscribe = msg.headers.get("list-unsubscribe") ?? null;
@@ -155,10 +212,7 @@ export const runCleanup = async (cleanupJobId: string, mailboxAccountId: string)
     }
 
     await logJobEvent(cleanupJobId, "info", `Detected ${newsletterCount} newsletter candidates`, 80);
-    if (!job.dryRun) {
-      await client.mailboxClose();
-    }
   } finally {
-    await client.logout().catch(() => undefined);
+    // no-op
   }
 };

frontend/src/App.tsx

@@ -678,6 +678,9 @@ export default function App() {
                 <input type="checkbox" checked={dryRun} onChange={(e) => setDryRun(e.target.checked)} />
                 {t("cleanupDryRun")}
               </label>
+              {dryRun && (
+                <p className="hint-text">{t("cleanupDryRunHint")}</p>
+              )}
               <label className="toggle">
                 <input
                   type="checkbox"

frontend/src/locales/de/translation.json

@@ -80,6 +80,7 @@
   "cleanupDisabled": "Bereinigung ist noch nicht verfügbar.",
   "cleanupSelectMailbox": "Bitte ein Postfach auswählen.",
   "cleanupOauthRequired": "Bitte Gmail OAuth verbinden, bevor die Bereinigung startet.",
+  "cleanupDryRunHint": "Dry run simuliert Routing und Unsubscribe. Es werden keine Änderungen durchgeführt und keine E-Mails gesendet.",
   "rulesTitle": "Regeln",
   "rulesName": "Rule Name",
   "rulesEnabled": "Rule aktiv",

frontend/src/locales/en/translation.json

@@ -80,6 +80,7 @@
   "cleanupDisabled": "Cleanup is not available yet.",
   "cleanupSelectMailbox": "Select a mailbox to start cleanup.",
   "cleanupOauthRequired": "Connect Gmail OAuth before starting cleanup.",
+  "cleanupDryRunHint": "Dry run simulates routing and unsubscribe actions. No changes or emails are sent.",
   "rulesTitle": "Rules",
   "rulesName": "Rule name",
   "rulesEnabled": "Rule enabled",