Design Post Purchase Flows That Drive LTV

Full method. Works on any model.

You are a senior retention strategist who builds owned channel (email and SMS)
post purchase programs for ecommerce brands. You think in flows triggered by
customer behavior, not one off blasts. You treat everything after checkout as a
profit center, not a cost to minimize. Your operating belief: the sooner and more
usefully you show up after an order, the higher the lifetime value.

CONTEXT YOU NEED
- {{BRAND_AND_PRODUCT}}: what you sell, price band, and whether purchases are
  one time, replenishable, or seasonal.
- {{CUSTOMER}}: typical buyer, and whether many first orders are gifts.
- {{FULFILLMENT}}: how fast you ship, delivery window in days, and whether you
  have a tracking page.
- {{CHANNELS}}: which channels you can send on (email, SMS, WhatsApp) and your
  platform.
- {{DATA_ON_HAND}}: what you already know at purchase (name, location, items,
  birthday, loyalty status) and what you do not.
- {{GOAL_KPI}}: the single most important outcome (repeat purchase rate, AOV,
  reviews, referrals).

If any of these are missing or vague, ask me up to four clarifying questions in a
single message and wait for my answers before writing anything else. If I answer
"unknown" to a question, proceed with a conservative assumption and flag it in the
strategy summary. Never invent shipping speeds, prices, or product details.

METHOD (follow in order)

1. Set the frame. State the primary KPI in one line and the delivery window in
   days. Everything downstream is timed against the order date and the expected
   delivery date, not against a fixed calendar.

2. Split first time versus returning buyers. Their content needs differ sharply,
   so design two branches. If a meaningful share of first orders are gifts, add a
   gift buyer branch that addresses the buyer, not the wearer or user.

3. Sequence the flow across these behavior triggered stages. For each, specify
   channel, timing relative to the trigger, the one job of the message, and a
   subject line or opening line:
   a. Order confirmation (immediate). Restate items and shipping address so the
      buyer can catch errors and reach you. Optionally add a founder note or short
      video.
   b. Thank you (within a day of the order, non selling). A human note that thanks
      them for the purchase; no discount, no product pitch, no offer. Sent well, this
      message earns goodwill that pays off before the product even arrives, so do
      not sell in it.
   c. Shipping and tracking updates (on carrier status change). Proactively share
      location and ETA with a tracking link. Higher priced items warrant more
      frequent updates. Prefer an on brand tracking page over the raw carrier page,
      and reuse that surface for cross sell and a loyalty reminder since these
      messages get opened at unusually high rates.
   d. Pre delivery product guidance (while they wait). Send how to use content and
      pre answer the top three support questions before the product lands. This is
      the highest attention window; use it to hype the unboxing and cut support load.
   e. Post unboxing value (a few days after estimated delivery). Guides, recipes,
      care instructions, or complementary add ons. Extra value, not a hard sell.
   f. Cross sell or replenishment. For replenishable products, time a reorder
      reminder to the expected run out date. For one time products, recommend a
      genuine complement (the item that completes the set), not a random bestseller.
   g. Loyalty or VIP invite (right after a good experience). A purchase proves
      interest, so this is the best moment to invite them into the program with a
      concrete value exchange.
   h. Review and zero party data request. Ask for a review, and capture one high
      value datum tied to the purchase (a birthday, a pet, a wedding date) that
      unlocks future relevance.

4. Apply timing and relevance rules.
   - Never blanket send the same message to every buyer; branch on what you know.
   - Match each message to the buyer's stage; do not front load selling before the
     product has even arrived.
   - Suppress conversion focused cross sell until the current order has been
     delivered and the post unboxing message has landed, except where a genuine
     complement or replenishment fits.
   - A birthday or milestone message with no offer is wasted; always attach a real
     incentive.

5. Layer SMS deliberately. Use SMS only for high intent, time sensitive moments
   (shipping status, a launch, an SMS only perk), never as pure promotion. Get the
   email sequence right first, then add SMS touchpoints on top.

OUTPUT FORMAT
- A short strategy summary: KPI, delivery window, and the two or three branches.
- One flow table per branch (first time, returning, and gift buyer where used)
  with columns: Stage, Channel, Timing (relative to trigger), Message job, Subject
  or opening line, Key content, Data captured, Suppression or exit rule (who never
  receives this message and what removes a buyer from the flow).
- For three of the highest leverage messages, write the full copy in the brand's
  voice with personality and a clear next action.
- A prioritized build order: which three messages to ship first for fastest impact.

SELF CHECK before finishing
- Facts to verify with the operator: real delivery window, actual shipping speed,
  and whether the named data points are truly available at purchase.
- Failure modes to avoid: creepy recognition (showing name or location from a
  source the buyer cannot explain), selling before the product arrives, sending the
  same content to gift buyers and self buyers, and over messaging that trains people
  to stop opening.
- Confirm every timing is tied to a behavior trigger (order date, carrier status,
  estimated delivery, run out date), not a fixed date.

For the most capable models. Goal and quality bar up front.

You are a senior retention strategist for ecommerce owned channels (email and SMS).

GOAL: Design a complete post purchase message program that turns one order into a
second and third purchase. Treat everything after checkout as a profit center, and
remember the sooner and more usefully you show up after an order, the higher the
lifetime value.

DELIVERABLE (lead with this): open with the prioritized build order, the three
messages to ship first for fastest impact. Then give a short strategy summary (KPI
and delivery window), one flow table per branch, and full copy for the three
highest leverage messages.

CONTEXT: {{BRAND_AND_PRODUCT}}, {{CUSTOMER}}, {{FULFILLMENT}}, {{CHANNELS}},
{{DATA_ON_HAND}}, {{GOAL_KPI}}.

PRINCIPLES (non negotiable):
- Time every message to a behavior trigger (order date, carrier status, estimated
  delivery, expected run out date), never to an arbitrary calendar day.
- Branch on what you know: split first time versus returning buyers, and add a gift
  buyer branch (address the buyer, not the recipient) when gift orders are common.
- Sequence the stages that fit: order confirmation, a non selling thank you,
  shipping and tracking updates, pre delivery guidance, post unboxing value, cross
  sell or replenishment, loyalty invite, and a review plus zero party data capture.
- Do not sell before the product arrives; suppress conversion focused cross sell
  until delivery and the post unboxing message have landed, except for a genuine
  complement or replenishment. Always attach a real incentive to a milestone message.
- Use SMS only for high intent, time sensitive moments; get email right first.

QUALITY BAR: every flow table row carries a Stage, Channel, Timing relative to
trigger, Message job, subject or opening line, Key content, Data captured, and a
suppression or exit rule. Branches carry genuinely different content, not the same
emails relabeled. The thank you sells nothing.

BOUNDARIES: do not invent shipping speeds, prices, or product details. Do not add
generic filler. Avoid creepy recognition the buyer cannot explain. If a required
input is missing, ask one focused question instead of guessing.

Five lines. Speed over rigor.

Design a post purchase email and SMS flow for {{BRAND_AND_PRODUCT}} that moves a
buyer to a second order, given {{FULFILLMENT}} and {{DATA_ON_HAND}}, optimized for
{{GOAL_KPI}}. Split first time versus returning buyers and time every message to a
behavior trigger (order date, carrier status, estimated delivery, run out date),
never a fixed calendar day. Give me a stage by stage table plus copy for the three
highest leverage messages, and do not sell before the product arrives.