Wave Engine

Test on a seed cohort, scale the winner — protect the one-shot list

Projected reactivations

72

across all waves

Projected pipeline

£151k

@ £2,100 avg deal

Contacted so far

1,796

of 2,793 audience

Test confidence

95%

variant C winning

Seed cohort — 300 contacts, 3 variants

Winner: C · 95% confidence
Variant A

"Your fixed rate is ending — here are your options"

39.3%

opens

3.6%

replies

Variant B

"{{firstName}}, you could be overpaying on your mortgage"

48.1%

opens

4.6%

replies

Variant C winner

"A 10-minute review before your renewal"

42.8%

opens

5.8%

replies

Rollout waves

  • Seed — A/B/C test

    Complete

    300 contacts

    7

    reactivations

  • Scale wave 1

    Complete

    623 contacts

    15

    reactivations

  • 2

    Scale wave 2

    Running

    873 contacts

    23

    reactivations

  • 3

    Scale wave 3

    Queued

    997 contacts

    27

    reactivations

List-health guardrails

Unsubscribe rate

auto-pause > 1.5%

0.70%

Complaint rate

industry safe < 0.10%

0.07%

Deliverability

inbox placement

97.1%
Healthy — scaling allowed

A cold list is a one-shot asset. We prove the message on 300 contacts before risking the other 2,493 — and auto-pause if engagement sours.