The easiest way for you to access reliable and couriers are through online. You can book a pick-up and delivery for today or next day depending the date and time you placed an email for the booking. However most of the same day pickup and delivery are available all the time. This often provides cut off time at least before midday to get your booking served within the day of delivery. With the same day express courier, remember that the booking is done through online only.
Couriers calculate the costs of delivery based on the location of the delivery. However, some courier cost is based on the weight of the parcel item. On the other hand the middleman of this courier offers a standard flat-rate price based on the standard maximum dimensions. The courier companies can make delivers for urgent delivers. In Zoom2u, parcels can be delivered to places within the 60 kilometer radius of the metropolitan of Sydney.
Postal mails on the other hand can reach more places and even outside the country yet with the number of days or week to arrive at the located it was booked. In some cases, theses deliveries arrival time are uncertain and depends upon how speed the transfer of the items from post to post. While online-based are more efficient on terms of tracking your parcel. So you might want to make sure that the items can get to your place as early as possible.
Couriers must have a list of things not allowed to be delivered by them. Among them may include valuable items and illegal ones. So you have to know exactly what best fit on your need to book, either online based couriers or not.