CTA links and redirects
Use promo links and participant references so campaign CTAs send each visitor to the right destination.
CTA links connect a campaign email, ad, or landing page button to the active promo state.
Participant reference
Use pf_ref when linking from email or another identified channel.
<a href="https://acme.plandalf.com/p/early-bird?pf_ref={{subscriber.email}}">
Get the launch price
</a>
The SDK also captures pf_ref from the current page URL so later checkout calls can include attribution context.
Checkout button with promo
<button
data-plandalf-present="summit-ticket"
data-plandalf-apply-promo="early-bird"
>
Buy now
</button>
External destination
Some campaigns send visitors to an external sales page first, then open Plandalf checkout from that page. Keep the same pf_ref value on the URL so attribution stays connected.
<a href="https://example.com/sales-page?pf_ref={{subscriber.email}}">
Read the offer
</a>
Related docs
Builder context
Keep the deadline tied to the sale.
Timers are not just visual countdowns. The related product surfaces keep promo styling, coupons, deadline state, and checkout behavior connected.