Regie.ai vs TheirStack: Sales Engagement Platform vs Data Enrichment Tool Comparison

Regie.ai vs TheirStack: Sales Engagement Platform vs Data Enrichment Tool Comparison

Sales teams building an outbound stack often weigh Regie.ai, a sales engagement platform for multi-channel sales outreach and engagement tracking, against TheirStack, a data enrichment tool for B2B lead data and contact enrichment. They cover different parts of the workflow, so this comparison covers what each one does, what each one costs, and where they overlap.

The Quick Answer

Regie.ai 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, Regie.ai lists ai agents for sourcing, ranking, call prep and follow-ups and relevant messaging trained on your voice and company pitch, and TheirStack lists job search and company search.

Both start at the same price point ($0/mo), so the decision comes down to features and workflow fit.

If your priority is coordinating outreach across email, phone, and social channels, Regie.ai 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

Regie.ai is Agentic sales workspace (RegieGO) with built-in enrichment, emailing, dialing and workflows, plus multi-channel outreach plays across email, phone and social run from a single chat interface.

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

Regie.ai Pricing (as of September 2026)

Source: Regie.ai Pricing

TheirStack Pricing (as of September 2026)

Source: TheirStack Pricing

Pricing Analysis

Both platforms start at the same $0/mo price point. The decision comes down to which feature set and tier structure works better for your expected usage.

TheirStack offers 4 pricing tiers compared to Regie.ai's 3, giving you more granularity as you scale.

Both platforms offer free tiers, so you can test each one before spending anything.

Features Breakdown

Regie.ai lists

• AI Agents for sourcing, ranking, call prep and follow-ups
• Relevant Messaging trained on your voice and company pitch
• Channel Orchestration across phone, email and social
• Multi-channel outreach plays with an execution timeline
• Built-in enrichment, emailing, dialing and workflows
• Always-On Pipeline with why-now signal tracking
• and 4 more listed below

TheirStack lists

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

Regie.ai Key Features

• AI Agents for sourcing, ranking, call prep and follow-ups
• Relevant Messaging trained on your voice and company pitch
• Channel Orchestration across phone, email and social
• Multi-channel outreach plays with an execution timeline
• Built-in enrichment, emailing, dialing and workflows
• Always-On Pipeline with why-now signal tracking
• Website visitor identification
• Lead enrichment with a multi-provider waterfall
• Pre-built plays ready to run
• Sales-Ready AI with pre-baked prompts and automations

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 Regie.ai

• AI Agents for sourcing, ranking, call prep and follow-ups
• Relevant Messaging trained on your voice and company pitch
• Channel Orchestration across phone, email and social
• Multi-channel outreach plays with an execution timeline
• Built-in enrichment, emailing, dialing and workflows
• Always-On Pipeline with why-now signal tracking
• Website visitor identification
• Lead enrichment with a multi-provider waterfall
• Pre-built plays ready to run
• Sales-Ready AI with pre-baked prompts and automations

Listed only by TheirStack

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

Integration Ecosystem

Regie.ai Integrations

Regie.ai connects with: Gmail, Microsoft Outlook, HubSpot, LinkedIn.

TheirStack Integrations

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

Integrations listed only by Regie.ai: Gmail, Microsoft Outlook, HubSpot, LinkedIn.

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

Use Case Recommendations

Best Fit for Regie.ai

• Budget-conscious teams looking for an affordable sales engagement platform
• Teams that need a wide feature set (10 capabilities listed)
• Teams that want to start free and scale up as needs grow
• Enterprise buyers who prefer custom pricing and dedicated support

Best Fit for TheirStack

• Budget-conscious teams looking for an affordable data enrichment tool
• Organizations with complex tech stacks needing broad integration support (5 integrations)
• 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

Regie.ai serves the multi-channel sales outreach and engagement tracking side of an outbound stack and TheirStack the B2B lead data and contact enrichment side. Regie.ai offers a more accessible entry point, while TheirStack starts at $0/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 Regie.ai and TheirStack for current information.