Step 1: Enable notifications for the Zoho Mail app in device settings

1. Open your device’s Settings and go to Apps > Manage apps.

2. Tap Zoho Mail from the list of apps.

3. Tap Notifications.

4. Toggle the button On to enable notifications for the Zoho Mail app.
   

Step 2: Battery optimisation unrestricted

1. Open your device’s Settings and go to Apps > Manage apps.

2. Tap Zoho Mail from the list of apps.

3. Tap Battery > Battery saver.

4. Tap No restrictions.
   

For Redmi devices in Android version 7:

1. Open the Security app.

2. Tap Manage apps.

3. Tap  Permissions.

4. From the list, choose Auto-start.
   

5. Enable Auto-start for the Zoho Mail app.