Enginy vs TheirStack: Sales Engagement Platform vs Data Enrichment Tool Comparison

Enginy vs TheirStack: Sales Engagement Platform vs Data Enrichment Tool Comparison

Enginy is a sales engagement platform; TheirStack is a data enrichment tool. Whether you need one, the other, or both depends on which part of the workflow you are buying for: multi-channel sales outreach and engagement tracking on one side, B2B lead data and contact enrichment on the other. This guide lays out what each vendor publishes.

The Quick Answer

Enginy is a sales engagement platform for multi-channel sales outreach and engagement tracking; TheirStack is a data enrichment tool for B2B lead data and contact enrichment. By each vendor's own wording, Enginy lists find b2b contacts and companies and verified phones and emails, and TheirStack lists job search and company search.

TheirStack publishes an entry price of $0/mo; Enginy uses custom pricing, so the two cannot be compared on list price.

If your priority is coordinating outreach across email, phone, and social channels, Enginy is the one built for it; for finding accurate contact data for target accounts, that is TheirStack. Many teams run one of each.

Understanding the Core Difference

Enginy is All-in-one sales platform that finds B2B contacts and companies through an AI chat interface, pulls verified phones and emails from more than 20 providers, and runs personalized multichannel outreach campaigns from one place. Includes social prospecting, intent signals, CRM sync, warmup and a smart inbox.

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

Contact SalesEnginy entry plan

Custom

FreeTheirStack entry plan

Free

Enginy Pricing (as of September 2026)

Source: Enginy Pricing

TheirStack Pricing (as of September 2026)

Source: TheirStack Pricing

Pricing Analysis

One or both platforms use custom or contact-based pricing for some tiers. Reach out to their sales teams for exact quotes based on your usage needs.

TheirStack offers 4 pricing tiers compared to Enginy's 1, giving you more granularity as you scale.

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

Features Breakdown

Enginy lists

• Find B2B contacts and companies
• Verified phones and emails
• Multichannel Outreach
• Social Prospecting
• Intent Signals
• AI Powered Research
• and 4 more listed below

TheirStack lists

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

Enginy Key Features

• Find B2B contacts and companies
• Verified phones and emails
• Multichannel Outreach
• Social Prospecting
• Intent Signals
• AI Powered Research
• CRM Sync
• Warm Up & Deliverability
• Smart Inbox
• Reach prospects at scale

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 Enginy

• Find B2B contacts and companies
• Verified phones and emails
• Multichannel Outreach
• Social Prospecting
• Intent Signals
• AI Powered Research
• CRM Sync
• Warm Up & Deliverability
• Smart Inbox
• Reach prospects at scale

Listed only by TheirStack

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

Integration Ecosystem

Enginy Integrations

Enginy connects with: HubSpot, Salesforce, Pipedrive, Microsoft Dynamics, Zoho, Apollo, Cognism, Dropcontact, Hunter, Kaspr, Lusha, ZoomInfo.

TheirStack Integrations

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

Integrations listed only by Enginy: HubSpot, Salesforce, Pipedrive, Microsoft Dynamics, Zoho, Apollo, Cognism, Dropcontact, Hunter, Kaspr, Lusha, ZoomInfo.

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

Use Case Recommendations

Best Fit for Enginy

• Teams that need a wide feature set (10 capabilities listed)
• Organizations with complex tech stacks needing broad integration support (12 integrations)
• Enterprise buyers who prefer custom pricing and dedicated support

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 multi-channel sales outreach and engagement tracking and B2B lead data and contact enrichment requirements and monthly budget
2. Estimate your expected sequences and engagement actions and 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

Enginy serves the multi-channel sales outreach and engagement tracking side of an outbound stack and TheirStack the B2B lead data and contact enrichment side. TheirStack publishes an entry price (a free tier), while Enginy uses custom pricing for its plans, so compare on features and on the quote you receive. 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 Enginy and TheirStack for current information.