Define what effectiveness means
A campaign can create recognition, enquiries, purchases or renewed conversations. Those outcomes have different values and require different measures. Establish the desired behaviour before choosing a postcard. If the task is to deliver a complex explanation, another format or a supporting destination may be necessary. If the task is a concise invitation to a well-defined audience, the postcard’s limited space can help focus the message.
Check whether the offer has been validated
Mail distributes a proposition; it does not repair one that buyers do not understand. Early-stage teams should distinguish testing a market problem from testing a delivery channel. Jefze’s product-market-fit testing approach is relevant to that earlier question of whether a proposed product deserves further investment. Conversations and small experiments can help refine an offer before production spend. A promising response is still a hypothesis about demand until customers take meaningful action.
Identify situations that justify physical delivery
A postcard may be worth testing when the target group is identifiable, addresses are usable and the potential outcome can support the total cost. Reaching a narrow set of valuable business accounts differs from mailing a broad list with no clear selection rule. Also consider whether the intended person works at the destination. Office distribution, remote work and shared reception areas can affect whether the piece reaches its audience.
Diagnose the campaign before blaming the format
Yotru’s article on message, recipient and timing offers a practical troubleshooting frame. Apply it alongside delivery and tracking checks. A low response could reflect an unsuitable list, a weak offer, a confusing destination or missing follow-up. Changing the design without identifying the likely constraint can produce another inconclusive test. Record competing explanations and choose the next experiment deliberately.
Compare alternatives fairly
Compare postcard campaigns with realistic alternatives serving the same objective. Use comparable audiences, equivalent follow-up effort and a consistent reporting period. Where possible, hold back a group to estimate what would happen without the mailing. If a postcard accompanies a larger sales sequence, evaluate the incremental value of adding it rather than assigning every resulting deal to the physical piece. Shared account activity makes attribution particularly difficult.
Keep the decision reversible
Launch a bounded wave with clear budget limits, operational checks and a scheduled review. Maintain a record of who was included and why. If response is promising but downstream quality is weak, adjust the targeting or offer before expanding. If the campaign produces little evidence either way, report that uncertainty. A disciplined pause is more informative than scaling a result whose apparent success depends on a single metric.
Sources are linked in the text. Examples are illustrative. About this publication.
