Postal Module permissions can be controlled from Permissions & Roles module
The available permissions are :

- List: Users who have this permission will be able to list postal available on the system
- Add postal: Users who have this permission will be able to add new postal on the system
- Edit postal: Users who have this permission will be able to edit previously created postal
- Delete postal: Users who have this permission will be able to remove postal from the system
- Download: Users who have this permission will be able to download postal attachment from the system
- Export: Users who have this permission will be able to export postal list from the system