diff --git a/packages/backend/src/api/controllers/settings.controller.ts b/packages/backend/src/api/controllers/settings.controller.ts
index 100f2da..318d638 100644
--- a/packages/backend/src/api/controllers/settings.controller.ts
+++ b/packages/backend/src/api/controllers/settings.controller.ts
@@ -1,5 +1,6 @@
 import type { Request, Response } from 'express';
 import { SettingsService } from '../../services/SettingsService';
+import { config } from '../../config';
 
 const settingsService = new SettingsService();
 
@@ -16,6 +17,9 @@ export const getSettings = async (req: Request, res: Response) => {
 export const updateSettings = async (req: Request, res: Response) => {
 	try {
 		// Basic validation can be performed here if necessary
+		if (config.app.isDemo) {
+			return res.status(403).json({ message: req.t('errors.demoMode') });
+		}
 		const updatedSettings = await settingsService.updateSettings(req.body);
 		res.status(200).json(updatedSettings);
 	} catch (error) {
diff --git a/packages/backend/src/services/ingestion-connectors/ImapConnector.ts b/packages/backend/src/services/ingestion-connectors/ImapConnector.ts
index 37b55e1..9f32469 100644
--- a/packages/backend/src/services/ingestion-connectors/ImapConnector.ts
+++ b/packages/backend/src/services/ingestion-connectors/ImapConnector.ts
@@ -157,7 +157,11 @@ export class ImapConnector implements IEmailConnector {
 				// filter out trash and all mail emails
 				if (mailbox.specialUse) {
 					const specialUse = mailbox.specialUse.toLowerCase();
-					if (specialUse === '\\junk' || specialUse === '\\trash' || specialUse === '\\all') {
+					if (
+						specialUse === '\\junk' ||
+						specialUse === '\\trash' ||
+						specialUse === '\\all'
+					) {
 						return false;
 					}
 				}