Review build · not released · no real HubSpot portal is connected unless you connected one
Example report with made-up contacts. Nothing here comes from a real portal.
Where duplicate candidates are coming from
Example Co (sample) · contacts created in the last 8 weeks · Matching rules v1 · read 2026-11-02 06:00 UTC
Your free diagnostic report is saved for 30 days. We permanently delete it after 2026-12-02, unless you delete it sooner.
Most new duplicate candidates have an associated source, the form “Webinar signup”: 8 new duplicate candidates in the last 8 weeks.
HubSpot didn’t report a total · 47 fetched · 47 evaluated · 16 possible duplicate groups found among evaluated records
5 source groups · 16 new duplicate candidates
New duplicate candidates by evidence status:
- Associated source 12
- Possible source 0
- More than one possible source 0
- Source unknown 2
- Not checked 0
- Not covered in this version 2
- Partly read 0
Duplicate candidates aren’t confirmed duplicates. Check them in HubSpot before you merge.
Source groups
Form “Webinar signup”
Associated source
8 new duplicate candidates
- Week of 2026-09-07: 1
- Week of 2026-09-21: 1
- Week of 2026-10-05: 1
- Week of 2026-10-12: 2
- Week of 2026-10-19: 1
- Week of 2026-10-26: 2
Exposed by: Email address, Matched on Work email
Next: Check whether “Webinar signup” is set to create a new contact when the email changes, or has a hidden email field.
Import “Trade show leads”
Associated source
3 new duplicate candidates
- Week of 2026-10-12: 3
Exposed by: Email address
Next: Review how “Trade show leads” matched existing contacts.
Unknown
Source unknown
2 new duplicate candidates
- Week of 2026-09-28: 1
- Week of 2026-10-19: 1
Exposed by: Email address
Next: Open the evidence to see what HubSpot shared.
“INTEGRATION”
Not covered in this version
2 new duplicate candidates
- Week of 2026-09-28: 1
- Week of 2026-10-19: 1
Exposed by: Email address
Next: Open the evidence to see what HubSpot shared.
Import “CRM migration batch”
Associated source
1 new duplicate candidate
- Week of 2026-10-05: 1
Exposed by: Email address
Next: Review how “CRM migration batch” matched existing contacts.
Worth a look, not counted
- Possible typo in the email domain (1 record)
What this report can’t tell you
- Whether two contacts are the same person.
- Why a form or integration created a second contact.
- Anything HubSpot didn’t record.