UseCase Solution
Clean Duplicate Contacts in CRM Lists
Merge customer lists from sales, marketing, and support. Keep the most recent interaction.
100% Local Processing
Large File Ready
Instant Results
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The Problem
Your CRM has duplicate contacts from multiple touchpoints. The same customer might have 3 records with slightly different emails or phone formats. Manual cleanup takes hours and risks losing important data.
Our Solution
Upload your contact list. Match by exact email or phone values, optionally ignoring case, edge whitespace, or symbols. Keep the newest or highest-value record, or fill empty fields across duplicates.
Key Features
Features optimized for this use case
Case-insensitive email comparison
Phone format unification
Multi-field matching
Keep newest interaction
Merge contact data
Preserve purchase history
How It Works
Complete data cleaning in three simple steps
Export CRM Data
Download your contact list
Clean Duplicates
Match and merge contacts
Import Clean List
Upload back to CRM
FAQ
Common questions about this use case
Gmail dots and +aliases are not normalized automatically. Preprocess those addresses before upload if your business rules require it.
Yes! Use 'keep by max value' strategy with your revenue or order count column.
Our merge strategy combines data - fill empty fields from duplicates, concatenate notes, or prefer non-empty values.
Ready to Clean Your Data?
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