Cut over message signing to hardware custody
A stronger trust boundary can expose dependencies that were previously easy to ignore.
Teams must choose between deadline certainty and confidence that every critical path has been seen.
“If our messages stop being trusted during a launch, we don’t get that moment back.”
Enrico Nunes · Director of Digital Commerce
Depends on authenticated promotional and transactional messaging for a national specialty retailer.
What pulls against what
- key custody vs. delivery continuity
- contract deadline vs. evidence completeness
- generated inventory vs. runtime truth
- irreversible transition vs. recoverability
What is at stake
The new key boundary reduces long-term exposure, but an unseen dependency can break authenticated delivery. Evidence must be strong enough to support a one-way transition
Why Klaviyo
At Klaviyo, it can matter because authenticated delivery is part of how merchants maintain trust in customer communications.
Written for
This is the setup. The work is inside.
Running it puts you in the room: the full situation and its constraints, stakeholders who push back in their own words, and the decisions that are yours to make. What you produce becomes a Day One Plan — work you can show someone instead of describing.