Field notes
Payment reminders
Scheduled nag emails. Empty recipient and burst load are the usual killers.
What Crash Labs saw
Gate WARN · risk 33/100 · 1 outbound action(s) · coverage 100%.
"02 - Promemoria scadenze pagamenti" can launch with caution (WARN): 3 high finding(s), risk 33/100. Start with: Nobody gets alerted when this workflow fails.
Why this breaks in production
high
Nobody gets alerted when this workflow fails
You may think an email or invoice finished when it actually stopped halfway - and no one is paged.
Fix → In n8n Settings, set an Error Workflow (or add an Error Trigger flow) that Slack/emails your team with the failed run link.
high
"Invia sollecito" can fail with no backup path
Customers get silence, duplicate retries, or a half-finished experience with no internal alert.
Fix → Turn on retry for transient SMTP/API errors, and route hard failures to an error branch that alerts someone.
high
Simulation failed: Missing email fields
Missing email caused send to abort mid-flow - customer path is not guarded cleanly.
Fix → Validate recipient with an IF before any send node.
Run this pattern on your workflow
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