Lead411 vs TheirStack: Data Enrichment Tool Comparison

Lead411 vs TheirStack: Data Enrichment Tool Comparison

If you are comparing B2B lead data and contact enrichment tools, Lead411 and TheirStack will likely both appear on your radar. They share some surface-level similarities, but the details reveal important differences in pricing, capability, and target audience.

The Quick Answer

By each vendor's own wording, Lead411 lists verified emails and direct dials and bombora intent data, while TheirStack lists job search and company search. A capability both offer can appear under different names, so read both feature lists below.

TheirStack offers a lower entry point at $0/mo compared to Lead411 at $49/mo.

If your priority is finding accurate contact data for target accounts, both tools target it. The right choice depends on your budget, team size, and the specific capabilities you need most.

Understanding the Core Difference

Lead411 is B2B lead intelligence platform with verified emails, direct dials, growth intent data, and unlimited search capabilities.

TheirStack is Job posting and technographics database for sales teams. Finds companies by the technologies they use and the roles they are hiring for, and enriches a company list with technographics and buying intent.

The two platforms take different approaches to solving the same core challenge.

Pricing Comparison

$49/moLead411 entry plan

Spark

FreeTheirStack entry plan

Free

Lead411 Pricing (as of September 2026)

Source: Lead411 Pricing

TheirStack Pricing (as of September 2026)

Source: TheirStack Pricing

Pricing Analysis

TheirStack offers the lower entry point ($0/mo vs $49/mo). Teams watching their budget will appreciate the savings, especially when starting out.

TheirStack offers 4 pricing tiers compared to Lead411's 2, giving you more granularity as you scale.

TheirStack includes a free tier, which is helpful for evaluating the platform without upfront cost.

Features Breakdown

Lead411 lists

• Verified emails and direct dials
• Bombora intent data
• Growth intent signals
• Unlimited email views
• Chrome extension for LinkedIn
• CRM enrichment
• and 4 more listed below

TheirStack lists

• Job search
• Company search
• Company lookup
• Enrichment
• Exports
• Email alerts
• and 2 more listed below

Lead411 Key Features

• Verified emails and direct dials
• Bombora intent data
• Growth intent signals
• Unlimited email views
• Chrome extension for LinkedIn
• CRM enrichment
• Advanced search filters
• Sales intelligence alerts
• CSV export
• 7-day free trial with 50 leads

TheirStack Key Features

• Job search
• Company search
• Company lookup
• Enrichment
• Exports
• Email alerts
• Webhooks
• MCP server

The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.

Listed only by Lead411

• Verified emails and direct dials
• Bombora intent data
• Growth intent signals
• Unlimited email views
• Chrome extension for LinkedIn
• CRM enrichment
• Advanced search filters
• Sales intelligence alerts
• CSV export
• 7-day free trial with 50 leads

Listed only by TheirStack

• Job search
• Company search
• Company lookup
• Enrichment
• Exports
• Email alerts
• Webhooks
• MCP server

Integration Ecosystem

Lead411 Integrations

Lead411 connects with: Salesforce, HubSpot, Zoho CRM, Pipedrive, Outreach, SalesLoft, Zapier, Make.

TheirStack Integrations

TheirStack connects with: Clay, LinkedIn Audiences, Make, N8N, Zapier.

Shared Integrations

Both tools integrate with: Zapier, Make.

Integrations listed only by Lead411: Salesforce, HubSpot, Zoho CRM, Pipedrive, Outreach, SalesLoft.

Integrations listed only by TheirStack: Clay, LinkedIn Audiences, N8N.

Use Case Recommendations

Best Fit for Lead411

• Budget-conscious teams looking for an affordable data enrichment tool
• Teams that need a wide feature set (10 capabilities listed)
• Organizations with complex tech stacks needing broad integration support (8 integrations)

Best Fit for TheirStack

• Budget-conscious teams looking for an affordable data enrichment tool
• Teams that want to start free and scale up as needs grow
• Enterprise buyers who prefer custom pricing and dedicated support

Feature Comparison Summary

Getting Started Checklist

1. Define your B2B lead data and contact enrichment requirements and monthly budget
2. Estimate your expected data credits or contact lookups to find the right tier
3. List the integrations your team currently relies on
4. Sign up for free trials or demos of both platforms
5. Run a small test with each tool before making a commitment
6. Evaluate the onboarding experience and support quality

Final Thoughts

Lead411 and TheirStack both serve the B2B lead data and contact enrichment market. TheirStack offers a more accessible entry point, while Lead411 starts at $49/mo. Your decision should weigh pricing against the specific features that matter most for your workflow.

Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.

Pricing and features verified as of September 2026. Visit Lead411 and TheirStack for current information.