HubSpot Duplicate Management: Fix 35K Duplicates & Improve E-commerce Data

Alright team, let's talk about something that's probably given more than a few of you a cold sweat recently: HubSpot's duplicate management. Specifically, that moment when you log in and suddenly see your 'potential duplicates' count skyrocketing into the tens of thousands. Sound familiar?

This exact scenario was the focus of a recent HubSpot Community discussion that really hit home for a lot of users. The original poster described a nightmare situation: their potential duplicates jumped from 10K to a whopping 35K, with the system seemingly flagging records based on just first and last names. The kicker? These flagged records wouldn't sync to Salesforce. Ouch.

Why the Sudden Surge in Duplicates?

If you've experienced this, you're not alone. One sharp community member quickly pointed out that this isn't necessarily a change in HubSpot's matching logic, but rather an increase in the limits of how many duplicates HubSpot's model will surface. Here's a quick look at the expanded limits:

Data Hub Starter: 2K → 10K
Data Hub Professional: 5K → 30K
Data Hub Enterprise: 10K → 100K

So, while it might feel like HubSpot got less discerning, it's actually just showing you more of what was already there, lurking beneath the surface. The goal is better data hygiene, but the immediate impact can feel like a tidal wave.

Dispelling the 'First Name, Last Name Only' Myth

The original poster's frustration about duplicates being based solely on first and last names is understandable given the sheer volume. However, another helpful community member and a HubSpot staff member clarified that the duplicate tool actually considers more properties for contacts than just names. The increased visibility just makes it seem like the criteria got looser.

The core problem, as many respondents highlighted, is how to tackle such a massive list without burning out. Manually reviewing 35,000 pairs? Impossible.

Actionable Strategies for Taming Your Duplicate Data

1. Stop the Bleeding First: Identify Your Duplicate Sources

Before you dive into the existing mess, pause and ask: where are these duplicates coming from? As one expert suggested, are they from imports, form submissions, or a specific integration like Salesforce? Pinpointing the source allows you to fix the root cause and prevent new duplicates from being created while you clean up the old ones. This is crucial for anyone building shopping online experiences, as new leads and customers are constantly flowing in.

2. Leverage Custom Duplicate Detection Rules

This is a game-changer! HubSpot now allows you to create your own custom rules for identifying duplicates. Instead of relying solely on HubSpot's default (which you now know has expanded visibility), you can define what truly constitutes a duplicate for your business. For example, you might set a rule that flags contacts as duplicates only if:

Email is equal
OR First Name + Last Name + Company Name are equal
OR Phone Number + Company Name are equal

This empowers you to be much more precise. Once you have custom rules, you can also manage duplicates in bulk based on these rules, which is a massive time-saver.

3. Bulk Reject False Positives with 'Refine Suggestions'

This came up as a key solution in the thread, and it's gold. Instead of clicking through one by one, navigate to Manage Duplicates > Actions > Refine suggestions. Here, you can add additional properties like company, state, phone, zip, or lifecycle stage. By applying these filters, you can quickly identify and bulk reject large groups of obvious false positives (e.g., all the 'John Smiths' who work for different companies in different states). Once rejected, those specific pairs won't keep reappearing.

4. Prioritize with Match Score or Overlapping Fields

HubSpot also offers a public beta for a duplicate similarity score. Even without that, you can typically filter or sort potential duplicates by 'match score' or the number of overlapping fields. This helps you prioritize the high-confidence duplicates (e.g., same first name, last name, *and* company) and leave the low-confidence pairs for later, or reject them outright.

5. Address Salesforce Sync Issues

The original poster mentioned that flagged duplicates weren't syncing to Salesforce. A community expert clarified that a 'potential duplicate' flag shouldn't automatically block sync. Sync eligibility is typically controlled by your Salesforce inclusion segment and sync rules. If you're seeing issues, dig into your Salesforce sync errors in HubSpot. Also, double-check for duplicate records in Salesforce itself, as this can create a feedback loop.

ESHOPMAN Team Comment

From the ESHOPMAN team's perspective, this discussion highlights a critical aspect of running a successful e-commerce operation: data quality. Whether you're managing customer data for a growing online store built with a robust bigcommerce ecommerce website builder or a complex B2B sales pipeline, clean data is the bedrock of efficiency and customer experience. We strongly advocate for proactive duplicate prevention and leveraging HubSpot's advanced features like custom rules and bulk rejection. Don't let a messy CRM hinder your marketing automation, personalized outreach, or accurate reporting – it directly impacts your bottom line.

Dealing with a sudden influx of potential duplicates can feel overwhelming, but HubSpot has provided the tools to manage it effectively. By understanding why the numbers jumped, taking a strategic approach to prevention, and leveraging features like custom rules and bulk rejection, you can turn that nightmare into a manageable data hygiene project. Your sales, marketing, and RevOps teams (and your customers!) will thank you for it.