Question 1

How does Listar find contact details?

Accepted Answer

Listar uses waterfall enrichment: for each contact it queries 30+ data sources in sequence and cross-references the results until it finds reliable, up-to-date information. You don't pick or configure sources — Listar combines them automatically to maximize coverage.

Question 2

What information can Listar find?

Accepted Answer

Professional contact data: verified email addresses and phone numbers, plus company information such as role, employer and firmographics. Listar focuses on professional information for B2B prospecting.

Question 3

How reliable is the data?

Accepted Answer

Every result is cross-referenced across multiple sources and verified before delivery — emails are checked for deliverability and phone numbers are validated. By combining 30+ sources instead of relying on a single database, Listar delivers more complete and more accurate data.

Question 4

Where does Listar's data come from?

Accepted Answer

From a combination of public sources and partner data providers, cross-referenced to verify each piece of information. Listar only provides professional contact information, for legitimate business purposes.

Question 5

Can I enrich contacts in bulk?

Accepted Answer

Yes. Upload a CSV or Excel file and Listar enriches every row automatically with waterfall enrichment — ideal for cleaning and completing existing lists at scale.

Question 6

Am I only charged when data is found?

Accepted Answer

Yes — Listar only charges you when it actually delivers a result. If no email or phone is found for a contact, it's free. See the pricing page for the detail per data type.

Question 7

Is Listar GDPR and CCPA compliant?

Accepted Answer

Yes. Listar only provides professional contact information for legitimate B2B purposes, sources data from compliant providers, and honors opt-out requests. You can request removal of your data at any time from our data removal page.

Question 8

How can I remove my data?

Accepted Answer

Submit a request from our data removal page. We'll locate your information across our sources and remove it from our index, in line with GDPR.

Frequently asked questions

Still have a question?