What should a packaging tag do after purchase?
Something durable, because the pack outlives the campaign that funded it. Most packaging tags point at a promotion that ends, so within months they are dead links sitting in cupboards, and the brand pays for that impression rather than the marketing one.
The pack outlives the campaign
A campaign runs for weeks. A jar, a bottle or a box sits in a cupboard for months and sometimes years.
A tag pointing at a promotional page therefore spends most of its life pointing at something that has ended, and the person who taps it late gets an error or an irrelevant page.
That is a worse impression than no tag at all, because they made an effort and were rebuffed by the brand.
And it is entirely avoidable, since what the tag points at is a decision you can change at any time.
What durable content looks like
Instructions for use, which stay relevant for the life of the product and are what people actually look for later.
Ingredients, specifications, allergen or compatibility information, which is why someone taps a pack they already own.
Reordering, which is commercially useful and permanently relevant.
Support and returns, which is when a customer most wants to reach you and least wants to search.
All four are more valuable to a customer holding the product than a promotion was, and none of them expire.
The redirect makes it possible
Write a short stable address on your own domain to the tag, and change what it resolves to over time.
During the campaign it leads to the campaign. Afterwards it leads to the durable page, without touching a single pack.
That requires owning the address from the start. A tag pointing at a campaign address directly, or at an agency's domain, cannot be moved when the agency's contract ends.
This is the same decision as a business card or a shop display, and packaging is where it costs the most to get wrong, because the objects are already in customers' homes.
The second life is the valuable one
The customer tapping a pack they bought six months ago is a better prospect than the shopper who tapped it in a shop.
They own the product, they are using it, and they have a specific question. That is a moment worth designing for rather than a residue of a campaign.
Measure it separately. Arrivals long after a campaign ended tell you what packaging tags are actually for in your category.
And plan the transition before the campaign launches, since the day it ends is the day nobody is thinking about packs already sold.
Frequently asked questions
What happens when the campaign ends?
Nothing, unless you change the redirect. The tag keeps pointing where it pointed, which by then is usually a dead page.
Should the tag point at the campaign at all?
It can, through an address you own, so it moves to durable content afterwards. Pointing directly at a campaign page is what traps you.
What content lasts?
Instructions, specifications, reordering and support. All four are useful to someone holding the product and none of them expire.
Is a late tap worth anything?
Often more than an early one. The person owns the product, is using it, and has a specific question.