Clean Duplicate Contacts in CRM Lists

Merge customer lists from sales, marketing, and support. Keep the most recent interaction.

100% Local Processing

Up to 10M Rows

Instant Results

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 email (ignoring case and Gmail dots), phone (normalizing formats), or multiple fields. Keep the record with the newest date, highest purchase value, or merge data from all duplicates into one complete profile.

Key Features

Features optimized for this use case

Email normalization

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

We can normalize Gmail aliases (ignore dots and +tags) so john.doe+marketing@gmail.com matches johndoe@gmail.com.

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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