Expandi vs TheirStack: Sales Engagement Platform vs Data Enrichment Tool Comparison
Compare Expandi (sales engagement platform) and TheirStack (data enrichment tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Expandi is a sales engagement platform built for multichannel LinkedIn and email outreach, priced from $99/mo, while TheirStack is a data enrichment tool for finding companies by technology and hiring signals, with a free tier and paid plans from $49/mo. They serve different parts of the outbound workflow, so many teams use both together rather than choosing one over the other.
Key takeaways
- Expandi's Business plan starts at $99/mo with unlimited campaigns, while its Agency plan requires contacting sales for 10+ seats.
- TheirStack offers a free tier with 50 company credits and 200 API credits per month, plus a paid API, Webhooks and MCP plan starting at $49/mo.
- Expandi lists 10 features including conditional sequence building with if/action branching, profile auto warm-up, and video personalization.
- TheirStack lists 8 features including job search, company search, enrichment, webhooks, and an MCP server.
- Expandi integrates with HubSpot, Pipedrive, Salesforce, Sendspark, LinkedIn Sales Navigator, and Webhooks, while TheirStack integrates with Clay, LinkedIn Audiences, Make, N8N, and Zapier.
Reviewed and updated September 4, 2026
Expandi vs TheirStack: Sales Engagement Platform vs Data Enrichment Tool Comparison
Sales teams building an outbound stack often weigh Expandi, 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
Expandi 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, Expandi lists multichannel outreach sending connection requests, messages and email follow-ups in one sequence and conditional sequence builder with if/action branching, and TheirStack lists job search and company search.
TheirStack offers a lower entry point at $0/mo compared to Expandi at $99/mo.
If your priority is coordinating outreach across email, phone, and social channels, Expandi 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
Expandi is Cloud-based LinkedIn outreach tool that sends connection requests, messages and email follow-ups in one sequence, with a conditional sequence builder, profile warm-up and per-account safety limits.
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
Business
Free
Expandi Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Business | $99/mo | Unlimited Campaigns Number |
| Agency | Contact Sales | +10 Seats |
Source: Expandi Pricing
TheirStack Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Free | Free | 50 company credits and 200 API credits per month |
| App | Usage-based | Company credit packs from 1,000 to 200,000 credits |
| API, Webhooks & MCP | $49/mo | 1,500 API credits per month |
| Datasets | Contact Sales | Jobs, Technographics and Buying intents datasets |
Source: TheirStack Pricing
Pricing Analysis
TheirStack offers the lower entry point ($0/mo vs $99/mo). Teams watching their budget will appreciate the savings, especially when starting out.
TheirStack offers 4 pricing tiers compared to Expandi'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
- Multichannel outreach sending connection requests, messages and email follow-ups in one sequence
- Conditional sequence builder with if/action branching
- Profile auto warm-up
- Smart algorithms for daily limit ranges
- Campaign prioritization across multiple campaigns
- Unlimited number of campaigns
- and 4 more listed below
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- and 2 more listed below
Expandi Key Features
- Multichannel outreach sending connection requests, messages and email follow-ups in one sequence
- Conditional sequence builder with if/action branching
- Profile auto warm-up
- Smart algorithms for daily limit ranges
- Campaign prioritization across multiple campaigns
- Unlimited number of campaigns
- Image and GIF personalization
- Video personalization
- Dedicated country-based IP address per account
- Step-by-step campaign statistics with a blacklist feature
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 Expandi
- Multichannel outreach sending connection requests, messages and email follow-ups in one sequence
- Conditional sequence builder with if/action branching
- Profile auto warm-up
- Smart algorithms for daily limit ranges
- Campaign prioritization across multiple campaigns
- Unlimited number of campaigns
- Image and GIF personalization
- Video personalization
- Dedicated country-based IP address per account
- Step-by-step campaign statistics with a blacklist feature
Listed only by TheirStack
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- Webhooks
- MCP server
Integration Ecosystem
Expandi Integrations
Expandi connects with: HubSpot, Pipedrive, Salesforce, Sendspark, LinkedIn Sales Navigator, Webhooks.
TheirStack Integrations
TheirStack connects with: Clay, LinkedIn Audiences, Make, N8N, Zapier.
Integrations listed only by Expandi: HubSpot, Pipedrive, Salesforce, Sendspark, LinkedIn Sales Navigator, Webhooks.
Integrations listed only by TheirStack: Clay, LinkedIn Audiences, Make, N8N, Zapier.
Use Case Recommendations
Best Fit for Expandi
- Teams that need a wide feature set (10 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (6 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
| Feature | Expandi | TheirStack |
|---|---|---|
| Starting Price | $99/mo | Free |
| Top Tier Price | Contact Sales | Contact Sales |
| Total Features Listed | 10 | 8 |
| Integrations | 6 | 5 |
| Founded | N/A | 2021 |
Getting Started Checklist
- Define your multi-channel sales outreach and engagement tracking and B2B lead data and contact enrichment requirements and monthly budget
- Estimate your expected sequences and engagement actions and data credits or contact lookups to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
Expandi 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 offers a more accessible entry point, while Expandi starts at $99/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 Expandi and TheirStack for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Expandi and TheirStack?
- Expandi is a sales engagement platform for multichannel outreach across LinkedIn, email, and messaging, while TheirStack is a data enrichment tool that finds B2B lead and company data based on technographics and hiring signals. They address different stages of the outbound workflow, so they are often used together rather than as substitutes.
- Which tool is cheaper, Expandi or TheirStack?
- TheirStack has the lower entry point with a free tier ($0/mo), compared to Expandi's Business plan starting at $99/mo. TheirStack also offers more pricing tiers overall, four compared to Expandi's two, giving more granularity as usage scales.
- Can I use both Expandi and TheirStack together?
- Yes, the article notes that many teams run one of each since they solve different problems. Expandi handles multichannel outreach sequencing while TheirStack handles finding and enriching accurate contact and company data, so combining them covers more of the outbound workflow.
- What integrations does Expandi support that TheirStack does not?
- Expandi integrates with HubSpot, Pipedrive, Salesforce, Sendspark, LinkedIn Sales Navigator, and Webhooks. TheirStack's integrations, listed separately, are Clay, LinkedIn Audiences, Make, N8N, and Zapier, so the two tools do not overlap in their listed integration ecosystems.
- Does TheirStack have a free plan?
- Yes, TheirStack offers a Free plan that includes 50 company credits and 200 API credits per month. This is a lower entry point than Expandi, which starts at $99/mo with no free tier listed.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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