Klaviyo is turning send timing into default AI and TailoredTexting should own the reply window after intent wakes up.

Klaviyo now lets AI decide when each message should land based on when that specific customer is most likely to open, click, and buy. That pushes timing out of operator instinct and into default platform behavior. TailoredTexting should answer by owning the reply window after buyer intent finally wakes up. Source: Klaviyo, “What’s New,” feature “Deliver every message at a personalized send time” (source page does not expose a clear publish date).

What happened: Klaviyo moved send timing into native AI execution. Instead of blasting around the team’s schedule, the platform now chooses a personalized delivery window for each recipient.

Why it matters

Timing is quietly becoming a category moat. Attentive is already using AI Grow to decide when a signup prompt should appear. Postscript is reducing friction once the conversation starts with tappable RCS replies. Klaviyo is now optimizing the moment before the thread even begins. That means generic “we respond with AI” positioning gets thinner, because the upstream stack is starting to decide when the customer is ready before TailoredTexting even sees the reply.

Exactly how TailoredTexting should implement this

Score every inbound conversation for hesitation half-life. A size question five minutes after product view is not the same commercial moment as the same question eighteen hours later.
Set reply-window policies by objection class: shipping fear gets an immediate answer, discount fishing gets controlled delay and proof-first handling, support-heavy issues route to slower but safer escalation.
Write timing context into the thread payload: last browse time, last campaign send time, last click time, cart age, and channel that created the wake-up moment.
Measure close rate, discount rate, and gross margin by first-reply delay bucket so the founder can see where speed actually helps and where speed just burns margin.

Bottom line

Klaviyo is automating when demand should be activated. TailoredTexting should automate what to do in the narrow window after that activation turns into a real reply.