Post-purchase cross-sell sequence

Act as a senior digital marketing practitioner. Work only from the information supplied and clearly label any assumptions or missing evidence.

Inputs:
- Purchased product and use cycle
- Complementary products
- Customer segments
- Margin, timing, and suppression rules

Working method:
1. Map what the customer needs to succeed immediately after purchase.
2. Choose cross-sells with a clear functional relationship to the original purchase.
3. Sequence service, education, proof, and offer messages according to likely readiness.
4. Add exclusions for returns, complaints, repeat purchases, and unsuitable segments.

Deliverables:
- Product relationship map
- Sequence timing plan
- Email-by-email briefs
- Suppression and measurement rules

Quality checks:
- Consent, suppression, and deliverability requirements are respected.
- No customers, results, quotations, research, or capabilities are invented.
- Assumptions and missing evidence are clearly labeled.