Emails doesn't indicate anything. My sister got her visa approved but never got any email. You usually won't get an email if you have applied paper based.
Her passport dispatch message came after 2 days of approval. She did apply paper based at VFS CHD. Then we manage to link her profile online that's how we got to know the status.
Go link your paper applications online and you will be able to check the decisions before getting your passports.
Good Luck!