Project Description: Mailchimp ↔ Airtable Sync via n8n

We are Speak English Institute, an English language school with multiple branches in the UAE. We use Airtable as our CRM and Mailchimp for marketing. We’re looking for an n8n specialist to help us finalize and optimize automations that sync student/lead data between Airtable and Mailchimp.

The goal:

  • Ensure Airtable records (Contacts table) always have the correct marketing_tags field populated.

  • Ensure Mailchimp members are always up-to-date with the correct tags, subscription consent, and merge fields.

  • Remove old/irrelevant tags from Mailchimp when Airtable data changes, so both systems stay in sync.

Technical context:

  • Airtable automations already send new/updated records to n8n via webhook. (we’ve reached our AT automation runs so will most likely to need to build this in N8N)

  • n8n workflows fetch and normalize data, batch process contacts, upsert members in Mailchimp, then update tags.

  • Marketing tags follow a standardized naming structure (e.g., Status: Alumni, Interest: General English, Branch: Dubai, Other: Newsletter, etc.).

  • We’ve already built most of the logic (split in batches, skip invalid emails, normalize casing, compute MD5 subscriber hash, upsert members, set tags), but are hitting issues with Mailchimp API requests, URL expressions, and tag syncing logic.

What we need you to do:

  • Review and fix existing n8n workflows (Airtable → Mailchimp sync).

  • Ensure email normalization, validation, and newsletter consent logic is solid.

  • Implement correct Mailchimp API best practices (subscriber hash in URLs, upsert member with proper body, GET/SET tags).

  • Add throttling/wait logic so Mailchimp rate limits are respected.

  • Ensure Airtable records are updated after successful sync (“Mark success” field).

  • Make the system robust: handle 404s gracefully (create members if they don’t exist), deduplicate tags, and avoid failed executions.

Deliverables:

  • A working n8n workflow that runs daily/on-demand, syncing all contacts from Airtable to Mailchimp with correct marketing_tags and consent.

  • Documentation or short Loom video explaining the workflow structure, key nodes, and how to maintain/update it.

2 Likes

Hello @JNB , welcome to n8n community, I have worked with n8n many times and l will love to collaborate with you on this you can schedule a call Here and you can checkout my upwork profile Here, for my pastworks and certifications

I’m a software enginner turned n8n builder and consultant, with 5 years of experience in automation and low-code.

I delivered many projects with Airtable and n8n. Check out my Youtube for some examples (such as the invoice processing one, which includes Airtable interfaces and n8n automation)

I also integrated with many REST APIs similar to Mailchimp, and know all the pitfalls and best practices.

Also see my n8n creator profile for some related automations I built.

Book a chat with me here, or reach out at [email protected].

Thanks for sharing this project. Based on your detailed requirements, I can definitely help finalize and optimize your n8n workflows.

The issues you’re facing from Mailchimp API rate limits to tag synchronization and data normalization are common challenges when building robust automations. My expertise lies in creating reliable, agentic systems that handle these exact problems, ensuring data integrity and smooth, hands-off operation.

I can help with the following:

  • Implement correct API practices to ensure your workflows are efficient and don’t hit rate limits.

  • Improve error handling to gracefully manage failed requests and avoid workflow interruptions.

  • Optimize data validation and normalization to ensure your Airtable and Mailchimp data are always perfectly in sync.

Feel free to connect with me via DM or email to discuss the project in more detail.

Best regards, Victor Egbo

Hi :waving_hand: I’m an n8n specialist with experience fixing Airtable ⇄ Mailchimp syncs. I can help you finalize your workflows so contacts and tags stay fully in sync, rate limits are respected, and Airtable updates are reliable.

I also speak Arabic and English, which may be useful since you’re based in the UAE.

Feel free to DM me and I’ll be happy to get this sorted quickly for you.

I am writing to express my strong interest in the n8n Specialist position you are looking to fill to optimize your data synchronization between Airtable and Mailchimp. With my in-depth experience in building and troubleshooting complex automation workflows, I am confident that I have the expertise to solve the challenges you are currently facing.

I have carefully reviewed the job description and understand the existing technical context. The issues you’ve mentioned, such as Mailchimp API errors, URL expressions, and tag syncing logic, are common challenges that I have successfully handled in my previous work.

My Approach to Solving Your Issues

Based on your requirements, this is how I would tackle the project:

  • Fixing and Optimizing: I’ll start by reviewing and analyzing your existing n8n workflows to identify the root cause of the errors. I will focus on ensuring proper email normalization, validating newsletter consent, and making sure all Mailchimp API requests adhere to best practices (using the subscriber hash, properly upserting members).

  • Building a Robust System: I will implement logic to gracefully handle errors like 404s (automatically creating members if they don’t exist). Adding a throttling or wait logic will ensure the system respects Mailchimp’s rate limits, preventing failed executions. I’ll also ensure the tag removal and deduplication logic works effectively to keep both systems perfectly in sync.

  • Maintenance and Delivery: Upon completion, I will ensure the workflow runs reliably on a daily basis. As requested, I will provide a brief Loom video and detailed documentation explaining the workflow’s structure, key nodes, and how to maintain and update it.

I am confident that I can deliver a stable, reliable, and fully automated solution for Speak English Institute. I look forward to the opportunity to discuss this project in more detail.

Sincerely,

Quang Nguyen

Contact me: [email protected]

I can help with this. I’ve worked on n8n builds that sync data between CRMs and marketing tools, including tag management, API requests, and error handling. Would you like to hop on a quick call to go over the details and get everything working smoothly?

Hey, I hope you are doing well. was tried to contact you on E-mail

Hey, I recently work on this type of project I would love to help you in this you can connect with me on given email [email protected] where I can first share my approach then deliverables.