Unverified50% confidenceEventExact time
In an n8n workflow, when the CRM node receives an invalidly formatted email, it returns a bad request and causes the entire run to abort.
1
Sources
50%
Confidence
Long-term
Relevance
10/14/2026
First Seen
Sources
Related Entities
Related Claims
Unverifiedn8n's deduplication approach is to insert a 'Find Contact' node before the 'Create Contact' node, sending a GET request to the CRM to check whether the email address already exists.74% similarUnverifiedIn an n8n lead automation workflow, a missing CRM deduplication check causes the same person submitting a form twice to result in two contact records, two marketing sequences, and two duplicate emails.72% similarUnverifiedWhen using the Email type field of an n8n Form, n8n automatically validates the format, and entering non-email content will report an Invalid Email error.66% similarVerifiedThe "Append n8n attribution" option in the n8n send node is enabled by default, adding a signature to the end of the email, and can be manually turned off63% similarUnverifiedIn the standard SMTP process, when an email is sent to a non-existent address, the receiving server returns a 5xx error code (such as 550 User Unknown) and the sender receives an NDR bounce notification.62% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/1024590API
curl https://kongchang.com/api/v1/knowledge/claims/1024590MCP
get_claim(id=1024590)