What This Update Actually Is
HubSpot's duplicate management tool surfaces contact pairs it thinks might be the same person. Before this update, you could reject those suggestions, but only in batches of 50 or fewer at a time.
Now that limit is gone. You can filter the duplicate table by similarity score or other criteria, select every visible pair at once, and reject them all in a single action. HubSpot logs everything in a "View history" panel so nothing disappears without a trace.
One important note: this bulk action applies to rejecting only. HubSpot is still building the safeguards needed to extend bulk action to merging. That part is coming, but it's not here yet.
Why HubSpot Shipped This
HubSpot's model flags any two contacts with a similarity score of 30% or higher. That threshold catches a lot. For a database of tens of thousands of contacts, that can mean thousands of suggested pairs sitting in your queue.
Here's the frustration the Sidekick team hears constantly: admins open the duplicate tool with good intentions, then spend an hour clicking through low-confidence suggestions that are clearly not duplicates. The 50-pair limit meant that clearing out noise required repetitive manual work across multiple sessions.
The humans managing these portals aren't just annoyed. They're also at risk of real data problems. When the queue is clogged with junk suggestions, genuine duplicates get buried. This update clears the noise so the signal can surface.
How to Use It Step by Step
- Navigate to Data Management inside Data Hub and open the Duplicates section.
- Apply a filter to the duplicate table. The most common starting point is filtering by similarity score below 50% to isolate the lowest-confidence suggestions.
- Click the Select All checkbox in the top-left corner of the table. This selects every visible pair in the filtered view.
- Choose the option to select all pairs (not just the current page). This extends the selection across the full filtered result set.
- Click Reject. HubSpot processes the rejection for all selected pairs at once.
- If you need to review or restore anything, open View History from the top-right menu of the duplicate management table. Every bulk rejection is logged there.
Start conservative. Filter to similarity scores below 40% first, review a sample, then reject. Work your way up. You can always restore from history if something unexpected gets caught.
What It Touches in Your HubSpot Strategy
Duplicate data isn't just an aesthetic problem. It distorts every downstream system that depends on your contact records.
Here's where bad duplicate data causes real damage:
- Segment contacts more accurately so your enrollment counts in workflows and lists reflect reality, not inflated noise.
- Protect email sending reputation by reducing the chance a single person receives the same message twice from duplicate records.
- Improve report accuracy so contact counts, deal associations, and attribution data aren't skewed by phantom duplicates.
- Keep sales reps focused by ensuring the humans on your sales team aren't working the same contact twice under different names.
- Support consent tracking integrity by keeping subscription and opt-in records tied to a single clean contact record.
Key Takeaway
Every time a duplicate pair sits unresolved in your queue, it's quietly degrading the quality of your segments, automations, and reports. Bulk rejection doesn't just speed up your cleanup process. It makes the cleanup process something your team will actually complete.
This update lives inside Data Hub, but its effects ripple into Marketing Hub (email and lists), Sales Hub (contact and deal records), and any reporting dashboard built on contact data. If you're running consent-based email tracking or setting up granular integrations, clean contact records are the foundation everything else depends on.
Key Takeaway
Duplicate management isn't a one-time project. Build it into a quarterly data health review. Use the similarity score filter to set a consistent threshold, bulk reject below it, then work through the higher-confidence suggestions methodically.
Who Should Care Most
This update is most valuable for teams with large, active contact databases where the duplicate queue has grown faster than the team's ability to work through it.
- RevOps and data admins who own CRM data quality and are accountable for report accuracy.
- Marketing ops leaders whose list sizes and automation enrollment numbers need to be trustworthy.
- HubSpot admins at companies with 10,000 or more contacts where the 30% similarity threshold generates hundreds or thousands of low-confidence suggestions.
- Teams that recently migrated data into HubSpot from another CRM, spreadsheet, or legacy system, where duplicate import is a common side effect.
You need Data Hub Professional or Enterprise to access this feature. It's not available on free, Starter, or standard Marketing Hub and Sales Hub tiers.
George's Take
I've been inside a lot of HubSpot portals. One of the most common things I see is a duplicate queue that nobody wants to touch because it's become so long it feels impossible. Admins know the data is messy. They just don't have a practical path through the mess. This update gives them that path. It's not glamorous. It won't get a standing ovation at INBOUND. But it's exactly the kind of infrastructure fix that makes every other tool in your portal more trustworthy. Clean data is the prerequisite for good automation, good reporting, and good decisions. I'd rather see a team spend 20 minutes clearing 500 low-confidence rejections this week than spend the next six months debugging why their segment counts don't match their revenue numbers.
“Clean data isn't a nice-to-have. It's the prerequisite for every automation, every report, and every decision your team makes inside HubSpot.”
If your duplicate queue has gotten out of hand, or if you're not sure where your data quality stands, that's exactly the conversation we have during a CRM records and data health review. And if you want to see how other recent HubSpot updates connect to your data layer, the granular OAuth scopes update is worth a read alongside this one.
If you're ready to stop letting duplicate clutter slow down your team, book a strategy call with Sidekick Strategies. We'll look at your actual portal, assess your data quality baseline, and give you a prioritized action plan. No generic advice. Just specific steps built for how your business actually runs.
Frequently Asked Questions
How many duplicate pairs can I reject at once in HubSpot?
With the November 2026 update, HubSpot removed the previous 50-pair limit. You can now filter the duplicate management table by any criteria, select all visible pairs, and reject the entire filtered set in one action. The exact upper limit isn't published, but the previous 50-pair cap no longer applies.
What is the default similarity score threshold in HubSpot's duplicate tool?
HubSpot surfaces any two contacts with a similarity score of 30% or higher as a potential duplicate pair. You can filter the duplicate table by similarity score to focus on high-confidence suggestions, such as those above 70%, and bulk-reject everything below your chosen threshold.
Can I undo a bulk rejection of duplicate pairs in HubSpot?
Yes. After performing a bulk rejection, open the duplicate management table and select "View History" from the menu in the top right. Every rejected pair is logged there, and you can restore any pair you want to review again. HubSpot doesn't permanently delete the suggestions without your review.
Does bulk reject in HubSpot also merge duplicates automatically?
No. As of November 2026, the bulk action only supports rejecting suggested pairs. HubSpot is actively working on additional safeguards before extending bulk action to merging. Merging still requires manual review per pair to prevent irreversible data loss from accidental bulk merges.
Which HubSpot plans include the bulk duplicate rejection feature?
Bulk duplicate rejection is available to Data Hub Professional and Data Hub Enterprise subscribers. It's not included in free, Starter, or standalone Marketing Hub or Sales Hub tiers. You need an active Data Hub subscription at the Professional level or above to access the duplicate management tool with this capability.
How does bulk rejecting duplicates improve my HubSpot data quality?
Rejecting low-confidence duplicate suggestions clears noise from your queue so you can focus on actual duplicates that need merging. It also improves list accuracy, automation enrollment counts, email deliverability, and CRM reporting by ensuring contact records aren't artificially inflated by phantom near-matches flagged by the similarity model.
