Remove Duplicates from Wedding Planning and Vendor Data
✓ TestedWorks with CSV, Excel, Google Sheets → JSON-LD Schema
By dataclean.to team · 2026-02-12
Wedding planners and couples manage guest lists, vendor contacts, seating charts, and RSVP responses across multiple spreadsheets, planning apps, and email threads. When the bride's family list overlaps with the groom's, or when a vendor appears under their business name and their personal name, duplicates sneak in. dataclean.to merges these overlapping records so guest counts are accurate, invitations go out once per household, and vendor communications stay organized.
The Problem
Duplicate guests on a wedding list mean extra invitations printed and mailed, incorrect catering headcounts, and awkward seating chart conflicts. A guest who appears on both the bride's and groom's lists gets two save-the-dates, signaling disorganization. On the vendor side, contacting the same florist through two different entries creates confusion about quotes and timelines. For wedding planners managing multiple events, duplicate vendor records across client files waste time and lead to missed follow-ups. The Knot Wedding Planning Resources
How to Fix It
1
Combine all guest and vendor lists
Merge the bride's guest list, groom's guest list, parent additions, and any vendor contact sheets into one spreadsheet. Include name, address, email, phone, relationship, and RSVP status.
2
Upload to dataclean.to
Import the combined CSV. The tool identifies name fields, address columns, and contact information for deduplication.
3
Set up household matching
Configure matching on last name plus mailing address to group members of the same household. Add individual matching on email or phone to catch guests listed separately but sharing an address.
4
Review duplicate entries
Inspect flagged duplicates. A guest appearing on both family lists is shown side by side with any differences in spelling, address format, or plus-one status highlighted for resolution.
5
Export the final list
Download the deduplicated guest list with accurate household groupings. Use it for invitation addressing, catering final counts, and seating chart planning with confidence in the numbers.
Frequently Asked Questions
How does the tool handle couples who should receive one invitation?
The household matching groups guests by last name and address. A couple living together appears as one household entry. You can choose to list both names on the merged record for proper invitation addressing.
Can it separate vendor contacts from guest contacts?
If your combined file includes a column indicating the record type (guest vs vendor), you can filter or process them separately. Otherwise, the tool treats all records the same and deduplicates based on contact information regardless of role.
What about guests who moved since the save-the-date was sent?
The tool matches primarily on name and email or phone, not solely on address. A guest with an updated address but the same email is still flagged as a duplicate of their old record, and you can keep the newer address in the merged entry.
Example: Input → Output
name
email
phone
city
status
Alice Johnson
alice@example.com
+1-555-0101
New York
active
alice johnson
ALICE@EXAMPLE.COM
5550101
new york
Active
Red rows show common data quality issues. dataclean.to normalizes and generates JSON-LD automatically.