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Reach potential customers through letterbox advertising
Reach consumers and businesses more effectively by using Australia Post's Unaddressed Mail to distribute your letterbox advertising. Send catalogues, flyers and other promotional material nationwide, or target suburbs or postcodes.
Reach
Australia Post can give you access to up to 12.7 million letterboxes for community notices1 or up to 9.3 million letterboxes for other advertising1, including the advantages of:
- metropolitan, regional and rural addresses
- secure apartment blocks and high-rise buildings
- Post Office Boxes1
Cut-through
Items are delivered with regular addressed mail, so your catalogues and flyers are more likely to be viewed and read. In fact, 83% of people take the catalogues, flyers and brochures they receive with normal addressed mail into the house.2
Reliability
You can trust Australia Post to deliver your letterbox advertising as specified. You can also rely on accurate address counts for your nominated delivery area. Our address data is based on fact, not assumptions, and is updated regularly to ensure it's up to date. This helps you to reduce advertising wastage by printing only the quantities you need.
For more information on how letterbox advertising can help you connect with more people in more places, download our Letterbox Advertising Guide (PDF 1.94MB).
Do it your way with Campaign Targeter
Our online tool, Campaign Targeter, gives you the opportunity to reach new customers. You can use this tool to plan, create and execute your promotional mail campaigns.
Campaign Targeter lets you do it your way, so your communication can hit letterboxes on time and on budget. Best of all, it’s free.
Service options
| Service | Delivery timeframe | Coverage |
|---|---|---|
| Premium3 | When you need to get your communication into market quicker. Articles are delivered within 7 business days of booking. | Same state delivery only |
| Standard | Articles are delivered within 15 business days of booking. | National delivery |
For both of these services your articles will be delivered from Monday to Friday of the nominated delivery week (excluding public holidays).
What types of letterbox advertising can you send?
Unaddressed mail is ideal for sending the following types of letterbox advertising:
- envelope material, cards and postcards
- catalogues, flyers and brochures
- samples and coupons
- wrapped or folded items
Please Note: You must ensure that all material to be delivered by Australia Post complies with applicable laws and regulations and the Terms and Conditions (PDF 1.04MB) for the Unaddressed Mail Service.
Some helpful references are provided below:
With Unaddressed Mail, you can send 'Small' or 'Large' items.
| Size details | Small | Large |
|---|---|---|
| Maximum weight | Up to 100g | Up to 100g |
| Minimum size | 88 x 138mm | - |
| Maximum size | 130 x 240mm | 260 x 360mm |
| Maximum thickness | 5mm | 20mm |
| Shape | Rectangular | Rectangular |
| Common examples | DL (110 x 220mm) C6 (114 x 162mm) DLE (114 x 225mm) DLX 120 x 235mm) | C5 (162 x 229mm) B5 (176 x 250mm) B6/C4 (125 x 324mm) C4 (229 x 324mm) B4 (250 x 353mm) |
Articles outside of the above specifications require approval by Australia Post prior to booking and delivery.
If you book via the UM online booking system, this Unaddressed Mail sizing guide (PDF 79.8kB) can help you work out the correct size and weight of your mail.
You can send your letterbox advertising to consumers and/or businesses in postcodes or suburbs of your choice.
Access up to 12.6 million letterboxes1 of various types, including:
- street addresses
- roadside addresses
- PO boxes
- counter collection points
Our targeting information can provide more guidance on where to send your letterbox advertising.
We encourage customers to book well in advance to secure bookings. This is especially the case in election periods and our peak delivery period where there will be increased demand and reduced capacity to deliver.
As part of our role in fulfilling the democratic process of elections, there are no capacity restrictions for political mail during election periods. However, other bookings may be impacted by the overall increase in demand during elections and there may be occasions where these bookings need to be split over multiple weeks or cannot be fulfilled.
Ready to get started?
1 As at 1/6/2025 Australia Post has access to 12.7 million delivery points nationally - including 3.4 million delivery points that bear the message "No Advertising Material", or similar words. These additional 3.4 million delivery points can only be accessed for community notices, where delivery is accepted by law. For addresses that accept advertising, Australia Post can provide access to 9.3 million letterboxes.
2 Better Connections: How letterbox advertising engages and drives purchasing behaviour, Australia Post, October 2014.
3 Premium service is only available for delivery within the state of lodgement. Articles must be lodged by 12 noon on the business day before the required delivery week. Premium Short Week service is available where the lodgement or delivery week includes a public holiday. Premium service and Premium Short Week service bookings will incur additional surcharges, unless agreed otherwise in writing (see the pricing tab for rates).