List growth & consent
A list is an asset only if you are allowed to mail it and the people on it respond. CASL makes the first part law in Canada: consent before the first commercial message, penalties up to $10 million per corporate violation, and implied consent that quietly expires two years after a business relationship ends. This service grows the list and keeps the paperwork that proves you may use it.
What does consent-first growth look like?
Three layers. Capture: signup forms, checkout opt-ins, and gated content placed where motivation is highest, each with consent language that satisfies CASL's identification and unsubscribe requirements. Confirmation: double opt-in flows that turn a typed email address into recorded express consent. Registry: a per-profile consent record (basis, date, source) with automated flags when implied consent approaches its two-year expiry.
The registry is the part most teams skip and most regret skipping. When the CRTC asks how you obtained consent for a segment, "they bought something once" needs a date attached, because the two-year clock runs from the end of the relationship.
Why measure growth by 30-day engagement?
Raw signup counts reward exactly the tactics that damage programs: pre-checked boxes, aggressive popups, incentives that attract coupon hunters. We track new-subscriber quality as first-30-day engagement and first-order rate instead, the same revenue-per-recipient lens used acrosscampaign intelligence. A smaller list that buys beats a big one that complains; Google's 0.1% complaint guidance makes that trade explicit for bulk senders.
How does this feed the predictive layer?
Every properly-captured subscriber arrives with a source, a consent basis, and a welcome-flow entry point, which means thewelcome flow can segment from the first email. Klaviyo's benchmarks put welcome flows at $2.65 average revenue per recipient, and clean consent capture is what keeps those sends out of the spam folder while the relationship is newest and most valuable.
Does double opt-in shrink list growth?
It reduces raw signups and improves everything downstream. Confirmed subscribers open, click, and buy at higher rates, and they generate fewer of the spam complaints that Google measures against its 0.1% guidance. For Canadian senders there is a second benefit: the confirmation click is clean evidence of express consent under CASL, recorded with a timestamp.
What consent records should we actually keep?
For each subscriber: what they agreed to, when, and through which form or checkout. CASL recognizes express consent indefinitely, but implied consent from a purchase expires two years after the relationship ends, so the record needs dates attached rather than a bare yes. Our consent register tracks the basis per profile and flags segments approaching expiry.
Are purchased or scraped lists ever workable?
No. CASL requires consent before the first commercial message, with penalties up to $10 million per violation for corporations, and mailbox providers punish cold lists through complaint rates regardless of jurisdiction. A purchased list burns the sender reputation your entire program depends on. We decline engagements built on one; the list has to be rebuilt properly.
What growth rate should we expect from on-site capture?
It depends on traffic and offer strength, so we benchmark against your own baseline rather than promising a universal number. What we commit to: every capture point A/B tested with pre-computed sample sizes, consent language reviewed against CASL requirements, and new-subscriber quality tracked by first-30-day engagement instead of raw signup count.
Audit your consent base before the CRTC does
The working session includes a consent-coverage read: what share of your list has a documented basis, and what expires in the next quarter.
Book a working session