The all-in-one data quality tool to stop bad data in its tracks

Data is the lifeblood of your business, but it can go stale quickly – at an average rate of 2 percent per month.

Listware is the all-in-one SaaS data quality tool that cleans, verifies, dedupes, and enriches all of your contact data wherever and whenever you need it. It is perfect for any list – online, Excel, Microsoft 365, or Google Sheets. With affordable pricing you can easily maximise deliverability, decrease waste, optimise sales and marketing efforts – all with Listware.

  • Standardise, verify, and update names, addresses, emails, and phone numbers to improve marketing and sales effectiveness
  • Match and merge duplicates with high-accuracy fuzzy matching and Golden Record survivorship to enhance the accuracy of reporting
  • Add detailed contact and geographical info for more precise segmentation, lead scoring, and more
Try Listware!

Listware Versions and Capabilities

Wherever you are, Listware has got your back. Whether on the go or working online, it integrates seamlessly with Excel, Microsoft 365, or Google Sheets.


Easily upload your file from anywhere – no software needed.

Open a spreadsheet, hit the Listware button and start cleaning – it’s that easy!

Clean your Google Sheets with ease - just add Listware and get started!


Use Listware in Microsoft 365 to keep your files clean.

No contracts, no hidden fees, no confusing plans - just better customer communication, analytics, decision-making, and strategy.

Cleaning your data couldn’t be easier!


See How it Works

Listware Capabilities

Self-Service Data Quality Tools - Address Verification - Netherlands

Address Verification

Verify, correct, and standardise national and international addresses to local postal formats for over 240 countries and territories to ensure deliverability.

Self-Service Data Quality Tools - Address Autocomplete - Netherlands

Address Autocomplete

Quickly and accurately autocomplete national and international addresses – reducing keystrokes by up to 50% while ensuring only valid, properly formatted data is applied to your records.

Self-Service Data Quality Tools - Phone Verification - Netherlands

Phone Verification

Verify national and international numbers, append useful geographic information associated with the phone number, and perform premium real-time checks to distinguish live numbers and phone types.

Self-Service Data Quality Tools - Email Verification - Netherlands

Email Verification

Validate and parse email addresses, correct common typographical errors, and standardise email addresses to improve deliverability and reduce spam. Features real-time email mailbox verification to remove up to 95% of bad emails at point of entry.

Self-Service Data Quality Tools - Duplicate Check - Netherlands

Duplicate Check

Check, find, and prevent duplicate records and clean up duplicates that are already in your database. Utilises fuzzy matching methods to find hard-to-detect duplicates caused by misspellings, typos, and different formatting.

Integrate Melissa's data quality solutions for Listware and others.

Integrations

Integrate our data quality solutions with Listware or nearly any other platform.



Request a Demonstration

A demonstration with one of our representatives provides a first-hand look at our products in action. Request one today!

  • 30-day free trial
  • Unlimited technical support
  • GDPR-compliant
Request Demo Now

Helpful Resources

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