first two are doing survey to get the voucher. <-- I received twice within 1 week, hence I used 2 email address to do the survey and entitled for 2 voucher.
third voucher is sent by them with title thanks for being our loyal customer, we are rewarding you with rm40 voucher.

Maybe you should fast fast go update your email correctly

just gotten RM40 Zalora eVoucher 

i got it too..but min spend 60...sien jor lor..means at least we need to pay rm25 =X