Lead Validation Requirements

Last updated: 15 January 2026

Lead Validation Requirements

Every lead you submit goes through validation to ensure quality. Understanding these requirements helps you submit leads that pass successfully.


Why Validation Matters

Validation protects everyone:

  • Buyers get reliable contact information
  • Sellers build trust and acceptance rates
  • Leads aren't contacted with wrong details
  • Platform maintains quality standards

What's Validated

When you submit a lead, the following are checked:

1. Email Address

Requirements:

  • Must be a valid email format (name@domain.com)
  • Must not be from a disposable email provider
  • Domain must exist and accept email

Examples:

Email Result
john.smith@gmail.com ✅ Valid
jane@company.co.uk ✅ Valid
test@tempmail.com ❌ Disposable provider
invalid-email ❌ Invalid format
john@nonexistentdomain123.com ❌ Domain doesn't exist

Blocked providers include:

  • Temporary email services (10minutemail, guerrillamail, etc.)
  • Known spam domains
  • Fake email generators

2. Phone Number

Requirements:

  • Must be a valid phone number format
  • Must include or match a valid country code
  • Must be a plausible number for the country

Examples:

Phone Result
+44 7700 900123 ✅ Valid UK mobile
+1 555 123 4567 ✅ Valid US number
07700900123 ⚠️ Warning: No country code
12345 ❌ Too short
+44 1234 ❌ Invalid UK format

Phone country warning: If the phone country code doesn't match the stated lead location, you'll see a warning. You can still submit, but verify the information is correct.

3. Location

Requirements:

  • Country must be valid
  • City should be real and in the selected country
  • If the lead request has location filters, your lead must match

Location matching:

  • Lead request requires "London, UK" → Your lead must be in London, UK
  • Lead request requires "UK (any city)" → Any UK city accepted
  • Lead request has no filters → Any location accepted

4. Name

Requirements:

  • First name required
  • Last name required
  • Must be reasonable names (not obviously fake)

What's checked:

  • Profanity filter
  • Obviously fake entries (e.g., "Test Test", "Asdf Asdf")
  • Minimum/maximum length

5. Content Filtering

Your message is checked for:

  • Profanity or inappropriate language
  • Sensitive personal information (SSN, full card numbers)
  • Spam-like content
  • Contact information that contradicts provided fields

Validation Outcomes

✅ Pass

Lead information is valid and submission proceeds.

⚠️ Warning

Something is flagged but submission can continue:

  • Phone country mismatch (different from lead location)
  • Potential duplicate elsewhere in system

Action: Review the warning, verify information is correct, proceed if confident.

❌ Fail

Submission is blocked due to:

  • Invalid email or phone format
  • Disposable email detected
  • Duplicate to the same lead request
  • Content policy violation

Action: Fix the issue and try again.


Common Validation Errors

"Email appears to be disposable"

Cause: The email domain is on our blocklist of temporary email services.

Fix: Get a real email address from the lead. If you believe this is an error, contact support.

"Phone number is invalid"

Cause: Number doesn't match expected format for the country.

Fix:

  • Include the full country code (+44, +1, etc.)
  • Check you haven't added extra digits
  • Verify with the lead

"Location doesn't match requirements"

Cause: Lead's location doesn't fit the buyer's filters.

Fix: Find a different lead request that accepts this location.

"Duplicate lead detected"

Cause: This exact lead was already submitted to this lead request.

Fix: You cannot submit the same lead twice. Try a different request.

"Content contains inappropriate language"

Cause: Your message triggered the profanity filter.

Fix: Rewrite your message without inappropriate words.


Best Practices for Passing Validation

1. Collect Complete Information

Get all required fields upfront:

  • Full first and last name
  • Real email address (not temporary)
  • Mobile phone with country code
  • Accurate city and country

2. Verify Before Submitting

Double-check:

  • Email spelling is correct
  • Phone number has correct digits
  • Location matches the lead request

3. Use Professional Messages

When adding context:

  • Keep it professional
  • Avoid slang or inappropriate language
  • Focus on helpful information for the buyer

4. Know the Lead Request Requirements

Before submitting:

  • Read the description
  • Check location filters
  • Review any special terms

5. Ask the Lead

If unsure about any detail:

  • Confirm the email spelling
  • Verify the phone number
  • Double-check their location

What Buyers See

Validation affects the lead score buyers see:

Validation Result Impact on Score
All checks pass Higher score
Warnings present Slightly lower score
Marginal pass Lower score

Higher-quality leads get purchased faster.


Frequently Asked Questions

Why was my lead rejected for email when I know it's real?

Our blocklist may include the domain. If you're confident it's legitimate, contact support with details.

Can I submit a lead without a phone number?

No, phone numbers are required for all leads.

What if the lead has two phone numbers?

Submit the primary/mobile number. You can mention the alternative in your message.

Do validation rules ever change?

Yes, we continuously improve validation. Always ensure information is accurate.


Next Steps


Questions?

Validation questions? Contact support.

Was this article helpful?

Don't take our word for it.

Let ChatGPT, Claude, or Perplexity do the thinking for you. Tap a button and see what your favourite AI says about Referr.

We use cookies

We use cookies to ensure you get the best experience on our website. For more information on how we use cookies, please see our cookie policy.