Content Pillar + Cluster Planner

PILLAR: ecommerce email marketing
URL: /guides/ecommerce-email-marketing/

CLUSTER POSTS (10):
  1. /blog/welcome-series — internally links to pillar
  2. /blog/abandoned-cart-sequence — internally links to pillar
  3. /blog/browse-abandonment-flow — internally links to pillar
  4. /blog/post-purchase-upsell-email — internally links to pillar
  5. /blog/winback-campaign — internally links to pillar
  6. /blog/birthday-automation — internally links to pillar
  7. /blog/product-review-request-email — internally links to pillar
  8. /blog/replenishment-reminder — internally links to pillar
  9. /blog/seasonal-promo-cadence — internally links to pillar
  10. /blog/email-design-best-practices — internally links to pillar

INTERNAL LINKING PATTERN:
  Pillar → links to ALL 10 cluster posts (in body, contextually)
  Each cluster → links back to Pillar (in intro + conclusion)
  Cluster → cluster: link only when contextually relevant (not by default)