ConvertKit to HubSpot, enriched leads with Clearbit

New ConvertKit subscribers feel like momentum. Then you open HubSpot and realize half the “leads” are Gmail addresses, duplicates, or missing the one thing sales needs: company context.

Marketing managers trying to prove pipeline, founders doing their own follow-up, and revenue teams cleaning lists in spreadsheets all run into the same mess. This HubSpot lead enrichment automation filters out personal emails, enriches real prospects with Clearbit, and upserts everything into HubSpot so sales can actually use it.

Below you’ll see how the workflow behaves, what it fixes, and what you’ll need to get it running without turning this into a tech project.

How This Automation Works

See how this solves the problem:

n8n Workflow Template: ConvertKit to HubSpot, enriched leads with Clearbit

Click to explore

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The Challenge: Converting “Subscribers” Into Sales-Ready Leads

ConvertKit is great at capturing interest. The problem starts the moment you try to route that interest into HubSpot in a way sales trusts. Personal emails (Gmail, Yahoo, Outlook) show up constantly, which means enrichment tools can’t reliably attach a company. Even when the subscriber is a real buyer, the record often lands in HubSpot half-empty, or worse, as a duplicate because the “same” person used a different form or email variation. It’s tedious work, and it tends to happen in bursts, right when you’re busiest launching or running campaigns.

It adds up fast. Here’s where it breaks down in day-to-day ops.

Someone has to check the email type manually, and that usually turns into a quick-but-never-quick spreadsheet pass.
Sales gets notified about “new leads” that have no company, no role, and no signal beyond “subscribed.”
Duplicates creep in because contact creation and company creation are handled inconsistently across tools.
Enrichment gets skipped when things are hectic, so you end up nurturing blind and hoping for the best.

The Fix: Enrich ConvertKit Subscribers and Upsert Into HubSpot

This workflow triggers the moment someone subscribes to your ConvertKit list (or form). It immediately filters out personal email addresses, so you don’t waste enrichment calls or clutter HubSpot with contacts sales will never pursue. For business emails, it sends the address to Clearbit to enrich the person’s profile, then checks the employment domain to see if there’s a real company behind it. If a company exists, the workflow enriches the company as well, looks up the matching company in HubSpot, and either updates it or creates it cleanly. Finally, it inserts or updates the contact and lead information in HubSpot so the record is usable from the first minute.

The flow starts with a ConvertKit subscription event. Clearbit adds context (person details, domain signals, company attributes), and HubSpot is kept tidy using lookup + upsert logic. The end state is simple: one clean contact tied to the right company, not a pile of “maybe” records.

What Changes: Before vs. After

What This Eliminates

Impact You’ll See

Manually checking for personal emails before sending anything to sales.
Copy-pasting subscriber info into HubSpot and guessing missing fields.
Creating companies and contacts separately, which causes duplicates.
Doing enrichment “later,” then never quite getting to it.

Most teams save about 2–4 hours a week on lead cleanup alone.
Sales sees company-linked leads instead of anonymous email-only contacts.
Cleaner lifecycle reporting because the same person doesn’t become three records.
Faster follow-up since the HubSpot record already has context.
Less debate between marketing and sales about lead quality.

Real-World Impact

Say you get 25 new ConvertKit subscribers a day from lead magnets and webinars. Manually, a quick “is this a business email?” check plus a basic enrichment search and HubSpot update can easily take about 5 minutes each, which is roughly 2 hours daily. With this workflow, the trigger is instant, Clearbit enrichment runs in the background, and HubSpot upserts happen automatically. You might spend 10 minutes a day reviewing edge cases instead of living in cleanup mode.

Requirements

n8n instance (try n8n Cloud free)
Self-hosting option if you prefer (Hostinger works well)
ConvertKit to trigger when subscribers join a list.
Clearbit for person and company data enrichment.
HubSpot to create and update contacts and companies.
Clearbit API key (get it from your Clearbit dashboard).

Skill level: Intermediate. You’ll connect accounts, map a few HubSpot fields, and test with real ConvertKit signups.

Need help implementing this? Talk to an automation expert (free 15-minute consultation).

The Workflow Flow

A ConvertKit subscriber comes in. The workflow starts on the ConvertKit form/list trigger as soon as someone joins the list you’ve selected.

Personal emails get filtered out. An email filter removes addresses that don’t map cleanly to a company (like free inbox providers), so they don’t pollute your sales pipeline in HubSpot.

Clearbit enriches the person, then checks the domain. The email is sent to Clearbit for an enriched profile. Next, the workflow checks if the employment domain is usable for company matching, and branches based on what it finds.

HubSpot stays consistent with lookups and upserts. If a company exists, company data is enriched, HubSpot is searched for an existing company record, and the workflow updates it or creates it. Contacts are inserted or updated so you don’t create duplicates when someone re-subscribes or comes through a different campaign.

You can easily modify the personal-email rules to match your own definition of “sales-worthy.” You can also swap Clearbit or HubSpot for alternatives, then keep the same branching logic and “upsert” approach based on your needs. See the full implementation guide below for customization options.

Step-by-Step Implementation Guide

Step 1: Configure the ConvertKit Trigger

This workflow starts when a new subscriber joins a specific ConvertKit form.

Add and open ConvertKit Form Trigger.
Set Event to formSubscribe.
Set Form ID to 6242124.
Credential Required: Connect your ConvertKit credentials.

Step 2: Filter Personal Emails and Enrich the Person Profile

This step removes personal email domains and enriches the remaining lead with Clearbit.

Open Exclude Personal Emails and keep the conditions that exclude personal domains (e.g., @gmail.com, @yahoo.com, @outlook.com, @hotmail.com, @icloud.com, @mail.com, @aol.com, @zoho.com, @gmx) from {{$json.subscriber.email_address}}.
Open Augment Email Profile and set Email to {{$json.subscriber.email_address}}.
Set Resource to person.
Credential Required: Connect your Clearbit credentials in Augment Email Profile.

⚠️ Common Pitfall: If personal domains slip through, Clearbit enrichment often fails or yields low-quality company data.

Step 3: Check Employment Domain and Split the Flow

The workflow checks whether Clearbit returned a company domain and routes accordingly.

Open Check Employment Domain and confirm the condition is {{$json.employment.domain}} notEquals {{null}}.
Understand the branching: Check Employment Domain outputs to both Augment Company Data and Insert or Update Lead in parallel (true/false paths).

⚠️ Common Pitfall: If employment.domain is missing, the company enrichment path won’t run and only the lead update will execute.

Step 4: Enrich Company Data and Lookup in HubSpot

Clearbit company enrichment feeds a HubSpot company search by domain.

Open Augment Company Data and set Domain to {{$json.employment.domain}}.
Credential Required: Connect your Clearbit credentials in Augment Company Data.
Open Lookup Company Record and set Resource to company.
Set Operation to searchByDomain and Domain to {{$json.domain}}.
Set Limit to 1 and keep Authentication as oAuth2.
Credential Required: Connect your HubSpot OAuth2 credentials in Lookup Company Record.

Step 5: Create or Update HubSpot Companies and Contacts

HubSpot operations create or update the company and associated contact, based on whether the company exists.

Open CRM Company Absent Check and confirm it checks for an empty object using {{$input.item.json}}.
Note the parallel routing: CRM Company Absent Check outputs to both Generate Company Entry and Modify Company Details in parallel (true/false paths).
In Generate Company Entry, set Name to {{$('Augment Company Data').item.json.name}} and map additional fields like twitterBio, description, yearFounded, countryRegion, twitterHandle, totalMoneyRaised, twitterFollowers, companyDomainName, and numberOfEmployees using the provided expressions.
In Modify Company Details, set Company ID to {{$json.companyId}} and map update fields from Augment Company Data (e.g., {{$('Augment Company Data').item.json.twitter.bio}}).
In Insert or Update Contact, set Email to {{$('Augment Email Profile').item.json.email}} and Associated Company ID to {{$json.companyId}}.
In Insert or Update Lead, set Email to {{$('Augment Email Profile').item.json.email}}, First Name to {{$('Augment Email Profile').item.json.name.fullName}}, and Last Name to {{$('Augment Email Profile').item.json.name.familyName}}.
Credential Required: Connect your HubSpot OAuth2 credentials to all HubSpot nodes (5 nodes handle lead, contact, and company updates).

Tip: If company creation and contact association fail, verify that {{$json.companyId}} is returned from the preceding HubSpot node.

Step 6: Review Utility Nodes and Fallbacks

Two nodes are present for branding and fallback handling.

Flowpast Branding is a sticky note for documentation and does not affect execution.
No Contact Found is a no-op path used when Augment Email Profile encounters an error (it uses Continue on Fail behavior).

Step 7: Test and Activate Your Workflow

Validate the workflow from end-to-end and then activate it for production.

Click Execute Workflow and submit a test subscription to the ConvertKit form.
Confirm that Exclude Personal Emails passes business emails and blocks personal domains.
Verify that Augment Email Profile returns person data and that Augment Company Data and Lookup Company Record execute when a domain exists.
Check HubSpot to confirm company creation/update and contact association (via Generate Company Entry, Modify Company Details, and Insert or Update Contact).
When everything looks correct, toggle the workflow to Active.

🔒

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Watch Out For

HubSpot credentials can expire or need specific permissions. If things break, check your HubSpot private app scopes (CRM objects like companies and contacts) first.
If you’re using Wait nodes or external rendering, processing times vary. Bump up the wait duration if downstream nodes fail on empty responses.
Clearbit enrichment can return partial data for some domains. When that happens, make sure your HubSpot field mapping tolerates blanks so you don’t overwrite good existing values.

Common Questions

How quickly can I implement this HubSpot lead enrichment automation?

Usually about 30–60 minutes once your accounts are ready.

Can non-technical teams implement this lead enrichment?

Yes. You won’t write code, but you will connect accounts and map a few HubSpot properties.

Is n8n free to use for this HubSpot lead enrichment workflow?

Yes. n8n has a free self-hosted option and a free trial on n8n Cloud. Cloud plans start at $20/month for higher volume. You’ll also need to factor in Clearbit API costs, which depend on your plan and usage.

Where can I host n8n to run this automation?

Two options: n8n Cloud (managed, easiest setup) or self-hosting on a VPS. For self-hosting, Hostinger VPS is affordable and handles n8n well. Self-hosting gives you unlimited executions but requires basic server management.

How do I adapt this HubSpot lead enrichment solution to my specific challenges?

You can tweak the “Exclude Personal Emails” filter to match your ICP (for example, allow specific free domains if you sell to creators). If you use a different enrichment provider, replace the Clearbit enrichment steps (“Augment Email Profile” and “Augment Company Data”) with your tool’s HTTP request or native node. Common customizations include writing enriched fields into custom HubSpot properties, only creating a company when a minimum set of firmographic fields exists, and routing “no company found” subscribers into a different nurture path.

Why is my HubSpot connection failing in this workflow?

Most of the time it’s missing scopes on your HubSpot private app or an expired connection in n8n. Reconnect HubSpot in n8n, then confirm you’ve allowed read/write access for contacts and companies. If it fails only on some runs, you may also be hitting API rate limits when large batches come through.

What’s the capacity of this HubSpot lead enrichment solution?

If you self-host, there’s no execution cap (your server and the APIs are the real limits).

Is this HubSpot lead enrichment automation better than using Zapier or Make?

Often, yes, if you care about CRM cleanliness long-term. This workflow relies on branching logic (personal email filtering, “company present” checks) and upsert patterns that get clunky or expensive in tools that charge by task. n8n also makes it easier to mix native nodes with HTTP requests when you need to adjust enrichment behavior without rebuilding everything. That said, Zapier or Make can be perfectly fine for a lightweight “send subscriber to HubSpot” sync. If you’re unsure, Talk to an automation expert and we’ll help you pick the simplest option that won’t create future cleanup debt.

Once this is running, new subscribers stop being “more data to clean” and start showing up as real, company-linked leads. The workflow handles the repetitive stuff, and your team gets the signal back.

ConvertKit to HubSpot, enriched leads with Clearbit

How This Automation Works

n8n Workflow Template: ConvertKit to HubSpot, enriched leads with Clearbit

The Challenge: Converting “Subscribers” Into Sales-Ready Leads