I will remove duplicates and merge your customer or contact list
Spreadsheet and data cleanup with a full change log
About this Gig
Repeated contacts making your list hard to use?
I remove confirmed duplicates and combine Excel or CSV contact lists using matching rules you approve. You receive a separate cleaned XLSX, a removal/merge log and questions for uncertain matches. Your original stays unchanged.
Names alone are not proof of a duplicate. Blank keys, conflicting details and look-alike IDs stay separate for review. Merges keep the source-row trail and use your written conflict rules.
Message me with total rows, columns, files and your preferred matching key. No lead sourcing, scraping, email verification, outreach or CRM access is included. Google Sheets must be exported first. No macros or external connections.
Files are processed with cloud AI tools such as Claude and ChatGPT, then checked against agreed rules. No-AI orders are declined. Share only data you are authorized to process this way. Do not send SSNs, banking details, medical records, credentials or confidential data without written clearance.
FAQ
How do you identify duplicates?
Using your approved key and normalization rules. Shared names, blank keys and similar IDs are not automatic matches.
What happens when details conflict?
Both records stay for review unless you give an explicit conflict rule. No best guess, silent overwrite or fuzzy auto-merge.
Can you combine lists?
Yes, within package limits, after you approve column mappings and compatible matching rules.
Do you find leads or verify emails?
No. I organize existing records; no scraping, lead sourcing, deliverability validation or messaging.
Do you use AI?
Yes, cloud AI tools such as Claude and ChatGPT process files. Provider data policies apply. No-AI orders are declined.
What do I receive?
A new cleaned XLSX, source-row removal/merge log and questions. Original preserved. CSV inputs accepted after safe text-first scan.

