FullEnrich vs Seamless.AI: Data Enrichment Tool Comparison
Compare FullEnrich and Seamless.AI side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
FullEnrich and Seamless.AI both offer free plans starting at $0/mo for B2B contact enrichment. FullEnrich focuses on waterfall enrichment across 25+ sources, mobile phone enrichment, and an MCP server, integrating with 8 tools including Clay and n8n. Seamless.AI offers a real-time contact search engine, pitch intelligence, and 10 listed features, integrating with 7 tools including Salesforce and Outreach.
Key takeaways
- FullEnrich's Pro plan costs $55/mo for 1,000 credits per month, while both platforms offer free tiers with 50 credits to start.
- FullEnrich lists 8 features including waterfall enrichment across 25+ sources and an MCP server, while Seamless.AI lists 10 features including pitch intelligence and an AI writing assistant.
- FullEnrich integrates with 8 tools including Clay, n8n, and OpenAI, while Seamless.AI integrates with 7 tools including Salesforce, Outreach, and SalesLoft.
- Seamless.AI was founded in 2015, while FullEnrich's founding year is not listed in the comparison.
- HubSpot and Zapier are the only integrations shared between FullEnrich and Seamless.AI.
Reviewed and updated September 4, 2026
FullEnrich vs Seamless.AI: Data Enrichment Tool Comparison
FullEnrich and Seamless.AI compete head-to-head in the B2B lead data and contact enrichment space. This guide compares their pricing tiers, feature sets, and integration ecosystems to help you make a confident decision.
The Quick Answer
By each vendor's own wording, FullEnrich lists waterfall enrichment across 25+ sources and mobile phone enrichment, while Seamless.AI lists real-time b2b contact search engine and email and cell phone lookups. A capability both offer can appear under different names, so read both feature lists below.
Both start at the same price point ($0/mo), so the decision comes down to features and workflow fit.
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
FullEnrich is B2B contact enrichment platform returning verified work emails, personal emails and mobile phone numbers through waterfall enrichment across 25+ data sources. Available in the app, a REST API and an MCP server.
Seamless.AI is AI-powered sales lead platform with real-time contact search engine, pitch intelligence, and data enrichment for B2B prospecting.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
FullEnrich Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Free trial | Free | 50 credits to start |
| Pro | $55/mo | 1,000 credits / month |
| Enterprise | Contact Sales | Custom |
Source: FullEnrich Pricing
Seamless.AI Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Free | Free | 50 Credits |
| Pro | Contact Sales | Annual Credit Packages |
| Enterprise | Contact Sales | Custom Packages |
Source: Seamless.AI 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.
Both platforms offer free tiers, so you can test each one before spending anything.
Features Breakdown
- Waterfall enrichment across 25+ sources
- Mobile Phone Enrichment
- Work Email Enrichment
- Personal Email Enrichment
- Reverse Email Lookup
- Bulk CSV Enrichment
- and 2 more listed below
- Real-time B2B contact search engine
- Email and cell phone lookups
- Pitch intelligence
- Data enrichment
- Buyer intent data (add-on)
- Job changes tracking (add-on)
- and 4 more listed below
FullEnrich Key Features
- Waterfall enrichment across 25+ sources
- Mobile Phone Enrichment
- Work Email Enrichment
- Personal Email Enrichment
- Reverse Email Lookup
- Bulk CSV Enrichment
- MCP Server
- Unlimited users included
Seamless.AI Key Features
- Real-time B2B contact search engine
- Email and cell phone lookups
- Pitch intelligence
- Data enrichment
- Buyer intent data (add-on)
- Job changes tracking (add-on)
- Autopilot list building (add-on)
- AI writing assistant
- Chrome extension
- Enterprise security and compliance
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 FullEnrich
- Waterfall enrichment across 25+ sources
- Mobile Phone Enrichment
- Work Email Enrichment
- Personal Email Enrichment
- Reverse Email Lookup
- Bulk CSV Enrichment
- MCP Server
- Unlimited users included
Listed only by Seamless.AI
- Real-time B2B contact search engine
- Email and cell phone lookups
- Pitch intelligence
- Data enrichment
- Buyer intent data (add-on)
- Job changes tracking (add-on)
- Autopilot list building (add-on)
- AI writing assistant
- Chrome extension
- Enterprise security and compliance
Integration Ecosystem
FullEnrich Integrations
FullEnrich connects with: HubSpot, Clay, Zapier, Make, n8n, Claude, OpenAI, Manus.
Seamless.AI Integrations
Seamless.AI connects with: Salesforce, HubSpot, Outreach, SalesLoft, Pipedrive, Microsoft Dynamics 365, Zapier.
Shared Integrations
Both tools integrate with: HubSpot, Zapier.
Integrations listed only by FullEnrich: Clay, Make, n8n, Claude, OpenAI, Manus.
Integrations listed only by Seamless.AI: Salesforce, Outreach, SalesLoft, Pipedrive, Microsoft Dynamics 365.
Use Case Recommendations
Best Fit for FullEnrich
- Budget-conscious teams looking for an affordable data enrichment tool
- Organizations with complex tech stacks needing broad integration support (8 integrations)
- Teams that want to start free and scale up as needs grow
- Enterprise buyers who prefer custom pricing and dedicated support
Best Fit for Seamless.AI
- Budget-conscious teams looking for an affordable data enrichment tool
- 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
Feature Comparison Summary
| Feature | FullEnrich | Seamless.AI |
|---|---|---|
| Starting Price | Free | Free |
| Top Tier Price | Contact Sales | Contact Sales |
| Total Features Listed | 8 | 10 |
| Integrations | 8 | 7 |
| Founded | N/A | 2015 |
Getting Started Checklist
- Define your B2B lead data and contact enrichment requirements and monthly budget
- Estimate your expected 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
FullEnrich and Seamless.AI both serve the B2B lead data and contact enrichment market. FullEnrich offers a more accessible entry point, while Seamless.AI 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 FullEnrich and Seamless.AI for current information.
Frequently asked questions.
Frequently asked questions- Which is cheaper, FullEnrich or Seamless.AI?
- Both start at $0/mo free tiers with 50 credits to start. FullEnrich's Pro plan is listed at $55/mo for 1,000 credits per month, while Seamless.AI's Pro tier requires contacting sales for annual credit packages.
- What integrations does FullEnrich support?
- FullEnrich connects with HubSpot, Clay, Zapier, Make, n8n, Claude, OpenAI, and Manus, totaling 8 integrations. HubSpot and Zapier are shared with Seamless.AI, while Clay, Make, n8n, Claude, OpenAI, and Manus are listed only by FullEnrich.
- What integrations does Seamless.AI support?
- Seamless.AI connects with Salesforce, HubSpot, Outreach, SalesLoft, Pipedrive, Microsoft Dynamics 365, and Zapier, totaling 7 integrations. Salesforce, Outreach, SalesLoft, Pipedrive, and Microsoft Dynamics 365 are listed only by Seamless.AI, not FullEnrich.
- Which tool has more features, FullEnrich or Seamless.AI?
- Seamless.AI lists 10 features total, compared to 8 features listed by FullEnrich. Seamless.AI's list includes pitch intelligence, buyer intent data, and an AI writing assistant, while FullEnrich's list emphasizes waterfall enrichment across 25+ sources and an MCP server.
- When was Seamless.AI founded?
- Seamless.AI was founded in 2015, according to the feature comparison summary. FullEnrich's founding year is not listed in the comparison.
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
Connect on LinkedIn →Explore more.
Ready to scale your outreach?
We build GTM engines that book real meetings. See the receipts.
Related articles.
Apollo.io vs Proofy: Data Enrichment Tool Comparison
Compare Apollo.io and Proofy side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
AroundDeal vs Leadspicker: Data Enrichment Tool vs Sales Engagement Platform Comparison
Compare AroundDeal (data enrichment tool) and Leadspicker (sales engagement platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
AroundDeal vs Salesflare: Data Enrichment Tool vs CRM Platform Comparison
Compare AroundDeal (data enrichment tool) and Salesflare (CRM platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Gong vs NeverBounce: Sales Engagement Platform vs Data Enrichment Tool Comparison
Gong vs NeverBounce: what Gong's own pages say about enrichment, what NeverBounce's API returns about an address, and how each vendor prices.
ContactOut vs Luru: Data Enrichment Tool vs Sales Engagement Platform Comparison
Compare ContactOut (data enrichment tool) and Luru (sales engagement platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Evaboot vs Microsoft Dynamics 365 Sales: Data Enrichment Tool vs CRM Platform Comparison
Compare Evaboot (data enrichment tool) and Microsoft Dynamics 365 Sales (CRM platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.