Add or update contact from incoming webhook to list

Webhook signups often miss key fields or list membership, causing duplicates and incomplete campaigns. This adds or updates contacts in your list so campaign managers can onboard subscribers same day.

Overview

When webhook signups arrive unprocessed, onboarding sequences stall and campaign managers waste hours on cleanup. This flow captures incoming submissions, normalizes key fields, and ensures subscribers are added or updated so outreach can begin within minutes.