diff --git a/apps/api/src/dkv/providers/exchange-inbox.provider.ts b/apps/api/src/dkv/providers/exchange-inbox.provider.ts
index f8b9cb7..3997e29 100644
--- a/apps/api/src/dkv/providers/exchange-inbox.provider.ts
+++ b/apps/api/src/dkv/providers/exchange-inbox.provider.ts
@@ -276,7 +276,8 @@ export class ExchangeInboxProvider implements InboxProvider {
 
   /** Resolve folder config to a EWS ParentFolderIds XML element.
    *  Well-known names → <t:DistinguishedFolderId>.
-   *  Custom names (e.g. "DKV" or "INBOX/DKV") → FindFolder deep search under inbox → <t:FolderId>.
+   *  Custom names (e.g. "DKV" or "INBOX/DKV") → FindFolder deep search under msgfolderroot → <t:FolderId>.
+   *  Searches msgfolderroot (full mailbox) so folders at root level are found, not just inbox subfolders.
    */
   private async resolveFolderElement(config: InboxConfig): Promise<string> {
     const folderCfg = config.folder ?? 'INBOX';
@@ -286,14 +287,20 @@ export class ExchangeInboxProvider implements InboxProvider {
     if (distinguished) {
       return `<t:DistinguishedFolderId Id="${escapeXml(distinguished)}"/>`;
     }
-    // Custom subfolder: resolve via FindFolder
-    const ffSoap = findFolderSoap('inbox', displayName);
+    // Custom subfolder: search entire mailbox (msgfolderroot) so top-level folders are found too
+    const ffSoap = findFolderSoap('msgfolderroot', displayName);
     const ffRes = await this.ewsPost(config, ffSoap, 'FindFolder');
-    const folderId = extractAttr(ffRes.body, 't:FolderId', 'Id');
-    if (!folderId) {
-      this.logger.warn(`EWS FindFolder: subfolder "${displayName}" not found — falling back to inbox`);
+    if (ffRes.statusCode !== 200) {
+      this.logger.warn(`EWS FindFolder HTTP ${ffRes.statusCode} for "${displayName}" — falling back to inbox`);
       return `<t:DistinguishedFolderId Id="inbox"/>`;
     }
+    this.logger.debug(`EWS FindFolder response for "${displayName}": ${ffRes.body.slice(0, 500)}`);
+    const folderId = extractAttr(ffRes.body, 't:FolderId', 'Id');
+    if (!folderId) {
+      this.logger.warn(`EWS FindFolder: subfolder "${displayName}" not found under msgfolderroot — falling back to inbox`);
+      return `<t:DistinguishedFolderId Id="inbox"/>`;
+    }
+    this.logger.log(`EWS FindFolder: resolved "${displayName}" → FolderId ${folderId.slice(0, 20)}…`);
     return `<t:FolderId Id="${escapeXml(folderId)}"/>`;
   }