When buying fax lists, “pre-scrubbed” lists are marketed as cleaned of invalid numbers, duplicates, and contacts who opted out—promising better delivery and legal safety. But how trustworthy are these claims? Let’s break it down.
When Pre-Scrubbed Fax Lists Are Legit
Reputable Vendors
Established list providers invest in regular fax lists updates, compliance checks, and remove numbers flagged on Do Not Fax (DNF) lists.
Compliance with Regulations
They screen against TCPA, GDPR, and internal opt-out databases, reducing legal risks.
Data Accuracy
Pre-scrubbing can reduce bounce rates and improve response because the data is more current and relevant.
Transparency
Legit sellers openly share their scrubbing methods, update frequency, and offer samples or guarantees.
When They Can Be Scammy or Risky
Unverifiable Claims
Sellers who won’t disclose scrubbing processes or provide proof of data freshness.
Outdated Data
Pre-scrubbed lists can still include bad numbers if updates aren’t frequent.
Hidden Fees or Contracts
Promises of “free” scrubbing that lead to unexpected costs or restrictive contracts.
Selling Illegal Lists
Some vendors ignore consent laws, selling fax numbers without proper opt-ins, exposing you to fines.
Tips to Avoid Scams
Ask for a Sample
Test a small batch before full purchase.
Verify Vendor Reputation
Check reviews, BBB ratings, and industry forums.
Request a Data Quality Guarantee
Some vendors offer refunds or replacements if delivery rates are poor.
Understand Legal Compliance
Confirm the list complies with TCPA, GDPR, and CAN-SPAM laws.
Use Third-Party Data Verification Services
Independently verify data freshness and opt-out status.
Bottom Line
Pre-scrubbed fax lists can be legitimate and valuable, but buyer beware: vet vendors carefully, demand transparency, and test data before committing large budgets.
Need help evaluating vendors or analyzing a pre-scrubbed fax list you’re considering?