Unsubscribe Mautic contacts from automated unsubscribe emails

Who is this for? This template is designed for businesses and organizations that use Mautic for email marketing and want to automate the process of removing contacts from specific segments when they receive an unsubscribe request via email. What problem is this workflow solving? / use case Many email recipients, especially those who are less tech-savvy, may not follow the standard unsubscribe link provided in emails. Instead, for example in Gmail, they click the "Unsubscribe" button in the Gmail web interface, which in turn sends an email with a consistent format, these emails contain the word unsubscribe in the 'To' field using the following structure: hello+unsubscribe6629823aa976f05306842

Help me set up the n8n workflow "Unsubscribe Mautic contacts from automated unsubscribe emails" (https://n8n.io/workflows/2241). It uses: Mautic, Gmail, Code. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.