What you need to know
- Letterbox starts with a physical delivery area. Social media starts with platform targeting and available audience signals.
- The two channels use different buying units, so compare them on the same business outcome rather than impressions alone.
- Neither channel has one response rate that applies across categories, offers and locations.
- A combined campaign is a hypothesis to test, not a guaranteed uplift.
- Call attribution is optional for Gibson letterbox campaigns and must be agreed before printing.
Letterbox distribution and social media advertising can both reach local customers, but they do it in different ways. A useful comparison starts with the business problem, audience and response path rather than assuming that physical or digital is automatically better.
Letterbox starts with place
A letterbox campaign is planned around a delivery area, quantity and physical format. That can suit a business whose customers need to live or operate within a defined service territory. Access conditions, letterbox notices and the practical delivery plan affect the audience that can actually be reached.
The creative has limited space and must make the audience, offer, next action and business identity clear without relying on a second screen.
Social media starts with platform targeting
Social campaigns use the audience and placement controls available in the selected platform. They can change creative and budgets quickly, but reach, delivery and measurement depend on platform rules, consent settings and the quality of the campaign setup.
A social impression and a delivered print item are not equivalent units. Comparing cost per thousand alone can hide whether either channel produced the business outcome that matters.
Use the same decision framework
- Audience: who needs to see the message and where are they?
- Offer: what useful action can they take?
- Creative: what must be understood within the available attention?
- Response path: how will an enquiry be captured?
- Outcome: which qualified enquiry, sale or other business result will be compared?
- Limitations: which responses, costs or external factors will not be visible?
How to compare the evidence
Use the same reporting window and outcome definition for both channels. Record the complete campaign cost, the responses captured through the agreed paths and the number that became qualified enquiries or customers where the customer records support that conclusion.
For social media, campaign links can use UTM parameters where the website's consent and analytics setup supports them. For a letterbox campaign, a campaign phone number, landing page, QR code or offer code can provide a separate response path.
What optional call tracking adds
When Gibson call tracking is included in the agreed letterbox scope, calls made to the campaign number can be reported against the campaign. A single number measures the whole drop. It does not identify each caller's suburb or prove physical delivery.
Area comparisons require a separate number, artwork version, landing-page path or distribution-wave structure agreed before printing. That added complexity should exist only when the resulting decision is valuable enough to justify it.
Using both channels together
A business can use letterbox and social media in the same campaign when the audience, budget and consent settings support both. The physical piece may introduce the offer while digital activity provides another response path. Whether the sequence improves outcomes is a hypothesis to test, not a promise.
Plan the next step
Review Gibson's Sydney letterbox campaign method, or send a contextual campaign brief with the target area, quantity, artwork status, timing and measurement requirement.
Frequently asked questions
Is letterbox distribution still useful for local campaigns?
It can be useful when the target audience is defined by geography and a physical message suits the offer. It is not automatically the better channel. Audience fit, creative, timing, access limitations, cost and the response path all affect the result.
Is social media cheaper than letterbox distribution?
The buying units are different, so impression cost alone is not a fair comparison. Compare the full campaign cost against the same business outcome, such as qualified enquiries or accepted jobs, and record which responses could not be attributed.
Which channel has the better response rate?
There is no universal response rate that applies to every local business. The audience, offer, creative, location, timing, competition and measurement setup can change the result. Use a defined test and compare like-for-like outcomes.
Can letterbox and social media be used together?
Yes, when the audience, budget and consent settings support both. Treat any expected reinforcement as a hypothesis to test, not a guaranteed uplift, and give each channel a response path that can be compared fairly.
Can a tracked number show which suburb responded?
One campaign number can report calls made to that number across the whole drop when Gibson call tracking is included. It does not identify each caller's suburb. Area comparisons require a separate number, artwork, landing-page or campaign-wave structure agreed before printing.
