Answer: Use n8n Schedule/Cron for timing, map each row to the correct Postifys connection id, and stagger platform calls so one failure does not block the rest.
Architecture
- Content calendar sheet/DB: datetime (with timezone), caption, media URL, destination account ids.
- n8n Schedule trigger polls due rows.
- For each due row, run platform-specific Postifys nodes.
- Write back status + history references.
Tips
- Store Postifys connection ids, not display names.
- Stagger TikTok/YouTube heavier uploads if you hit temporary-media pressure.
- Use approval workflows for brand-sensitive accounts.
- Keep secrets in n8n credentials, never in sheet cells.
Starter: scheduled Facebook feed · all templates · Use case: multi-account publishing