Use a campaign-specific QR link when you need to distinguish website traffic from different mailings. Use a genuinely campaign-specific phone number when you need to distinguish calls to those mailings. Use both when you can support both response paths and reconcile repeat contacts. Neither route, by itself, proves that the mailing caused a sale.
TL;DR
- A QR link can carry campaign context into a website visit, but a visit is not an identified seller or a unique lead.
- A unique phone number can distinguish a campaign only if that number is assigned and used specifically for it during the measurement period.
- Offer a workable response path to people who do not scan. Test the printed QR code, final page and phone routing before the mailing leaves.
- Reconcile calls, visits and forms into people and properties without guessing missing campaign matches. Homebase's current shared account number is not a promise of a unique number for every mailing.
Choose what you need to distinguish
Start with the decision you want the test to support. Comparing two mail designs requires a design-level reference. Comparing neighborhoods requires a neighborhood-level reference. Reusing one generic link or phone number across all of them cannot, on its own, distinguish those sources.
The following is a planning comparison, not a product-feature promise or a claim that one channel produces more sellers.
| Response path | Useful recorded information | Main limitation | Procurement question |
|---|---|---|---|
| Campaign-specific QR link | Visits arriving with the link's campaign reference | A scan may remain anonymous or the link may be forwarded | Does the intended reference survive the redirect and reach the response record? |
| Campaign-specific phone number | Calls to a number assigned to that campaign | Repeat calls, wrong parties and shared use are not new sellers | Is the number exclusive to this campaign for the agreed period, and where does it route? |
| QR plus phone | Two ways to respond and two sets of activity | One person may use both | Can the records be reconciled without adding them together as separate leads? |
| Shared generic link or account number | Activity associated with the destination or account | The specific mailing may be unknown | Will the report retain unknown campaign attribution? |
A phone number is not campaign-specific just because a tracking provider supplied it. If you print it on several active mailings, the number alone identifies their shared response route, not which one prompted the call.
QR codes: inspect the destination, not just the square
The QR code opens a destination. To distinguish campaigns, the response path needs the appropriate reference and the receiving system must retain it. A short link that opens the right page but loses the campaign context is not a successful attribution test.
Google Analytics' campaign-URL guidance explains that URL parameters identify referring campaigns and can distinguish creative versions. It also warns that parameter values are case-sensitive and missing parameters can produce “not set” reporting values. This describes Analytics traffic reporting, not a guarantee that a contact form or CRM saves the same reference.
Use the destination and naming convention already approved for your campaign. Check the complete path from printed code through any redirect to the final page and response record. Do not invent a second naming system halfway through a test.
A forwarded QR link still carries the original link's reference. That tells you which response path was used; it does not establish who received the postcard or whether the visitor owns the mailed property. Ask for the property and appropriate contact details before treating anonymous activity as a seller opportunity.
Phone numbers: verify assignment and continued service
If you are procuring campaign-level call tracking, ask the provider to document which number maps to which campaign and date range. Confirm the destination account, the answering or voicemail route, and whether texting is actually supported. Do not assume a voice number also accepts or delivers text messages.
Keep a record of when a number is introduced, reused, changed or retired. A call arriving after a later mailing may still come from an older postcard. Immediate reuse can make the source ambiguous even if the routing works.
Before paying, settle these practical questions:
- Who controls the number, and can you retain or move it if the service ends?
- How long will it keep working after the last mailing, and what happens at expiry?
- What happens when a call is missed or the destination is unavailable?
- Can you export the number-to-campaign mapping and response records needed for your review?
These are questions for the actual provider and plan, not claims that every service offers those features. Keep the seller's route to you working even when attribution is incomplete.
Homebase's current number is an account route
Homebase's tracking lesson describes its current shared-number setup. Calls and texts can identify your Homebase account without identifying one mailing. Do not assign an unmatched call to the most recent send.
Homebase QR response paths can carry campaign and recipient references where those references are present. That is still different from proving the identity or motivation of everyone who visits. The Homebase method separates recorded responses from proven campaign attribution.
If a buying decision depends on a separate number for every campaign, verify the actual available arrangement before ordering. This guide does not say Homebase currently supplies it.
Run a printed-proof test before sending
Use the final-size proof, not just the QR image on a large design screen. A successful preview in the design tool does not test a printed response path.
- Scan the printed code on more than one phone. Check legibility, the destination and the page on a small screen.
- Follow every redirect. Verify that the intended campaign or creative reference reaches the destination and, when applicable, the submitted form record.
- Call the printed number from another phone. Confirm the right account, answer route and voicemail; test text delivery only if texting is offered.
- Submit a clearly marked test response. Check which events and records appear, then keep test activity out of the campaign outcome count.
- Check the alternative route for someone who does not scan. Any printed URL or phone number must work as printed, without assuming it has the QR link's campaign context.
- Record the proof version, route mapping, test date and person responsible for handling responses. Recheck after changes to a destination or number.
This is a QA checklist, not a recommendation to redirect an existing Homebase response path or add unapproved tracking parameters.
Count sellers separately from activity
An invented example: a mailing produces 12 recorded QR visits, five phone calls and three submitted forms. Those are 20 activity events, not necessarily 20 people. Some visitors may never identify themselves; a form submitter may also call twice. The event totals alone cannot tell you the unique seller count.
Keep the activity log, then reconcile identifiable contacts using the available contact and property information. Retain first-known source, later touchpoints and any unresolved campaign attribution. Do not force an anonymous visit to match a later caller just because the times are close.
For a broader reporting method, use the direct-mail response-rate guide. Compare equivalent windows and definitions. A recorded source is evidence of a response path, not a controlled estimate of the extra purchases caused by the mailing. QR and phone responders choose different routes, so their observed outcomes alone do not establish that one response option caused better results.
Choose the simplest combination you can test, answer and reconcile. If neighborhood mailing fits that plan, analyze a neighborhood free. Mailing is paid; response-path activity is not a promise of seller leads or closed purchases.
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