Editor's Verdict

Strong Phone Data,
But Verify Emails First

4.1
★★★★☆
Good
Seamless.AI excels at real-time contact discovery and phone number lookups for US markets. The intuitive interface makes list-building fast, but email accuracy requires independent verification before campaigns. Best used as a supplementary data source alongside your main engagement platform.

What We Love

  • Real-time data refresh catches job changes
  • Strong direct dial & mobile phone coverage
  • Intuitive UI with fast Chrome extension
  • Solid Salesforce & HubSpot integrations

! Could Be Better

  • Email accuracy below marketing claims
  • Pricing requires a sales call to confirm
  • No native email sequences included
✓ 50 free credits • No credit card required Try Seamless.AI Free →

See Seamless.AI in Action

Real screenshots from the platform interface.

1

Contact Search Dashboard

Access 1.4B+ contacts with powerful filtering options

Seamless.AI review - contact search dashboard interface
1.4B ContactsMassive B2B database
125M CompaniesFirmographic data included
422M PhonesDirect dials & mobiles
2

Company Search Results

Find and research companies with detailed profiles

Seamless.AI review - company search results example
Company DetailsRevenue, size, industry
Find ContactsOne-click contact discovery
Org ChartView company hierarchy
3

Enrich Your Lists

Upload existing lists and enrich with fresh contact data

Seamless.AI review - enrich lists with contact and company data
Contact ListEnrich emails & phones
Company ListAdd firmographic data
Job ChangesTrack role transitions

Ready to build your prospect list?

Start Free with 50 Credits →Free plan available • No credit card required

How Seamless.AI Works

1

Define Your Target

Use filters like job title, company size, industry, location, and technologies to define your ideal customer profile.

2

AI Searches in Real-Time

Seamless.AI's engine crawls the web to find and verify contact information, returning emails, phone numbers, and company data.

3

Build Your List

Select contacts, add them to lists, and export to your CRM. The Chrome extension also works directly on LinkedIn profiles.

4

Enrich & Sync

Push contacts to Salesforce, HubSpot, or Pipedrive. Use the API for custom workflows and automated enrichment.

Enterprise Compliance

Seamless.AI is SOC 2 Type II certified and compliant with GDPR and CCPA requirements for data handling.

Key Features

Core

Contact Search

Find B2B contacts by title, company, industry, location, revenue, and technology stack.

Core

Direct Dial Discovery

Access 422M+ phone numbers including mobile and direct lines for cold calling.

Core

Email Verification

AI-powered email validation with confidence scores to help prioritize outreach.

Core

Company Search

Research 125M+ companies with firmographic data, org charts, and technographics.

Pro

Buyer Intent

Identify companies actively researching solutions in your category.

Pro

AI Writer

Generate personalized email copy and messaging using AI assistance.

Core

Chrome Extension

Find contact data directly from LinkedIn profiles and company websites.

Pro

Autopilot

Automated list building that continuously finds new contacts matching your criteria.

Experience all features with free credits:

Start Free Trial →50 credits included

Pricing Plans

Seamless.AI requires a sales call for exact pricing. Below are estimates based on third-party analysis.

Free

$0/mo
✓ 50 credits (limited)
✓ Email & phone search
✓ Chrome extension
Get Started

Basic

~$147/user/mo
✓ ~250 credits/month
✓ Email & phone search
✓ Basic CRM integrations
Contact Sales

Enterprise

Custom/year
✓ Custom credit limits
✓ API access
✓ Dedicated support
✓ Phone support
Contact Sales
Important: Pricing is not publicly listed. Estimates based on third-party analysis as of December 2025.
Note: Add-ons like Autopilot, AI Writer, and Buyer Intent may increase total costs. Annual billing typically required.

Cost Comparison Context

~$147
Seamless.AI Basic
vs
$49-149
Apollo.io plans

Apollo.io offers built-in sequences and dialer at similar or lower price points. Consider your full workflow needs.

Detailed Pros & Cons

✓ Pros

Real-Time Data Refresh

AI crawls the web continuously, catching job changes and new contacts faster than batch-updated databases.

Strong Phone Number Coverage

422M+ phone numbers including direct dials and mobiles—a standout feature for cold calling teams.

Intuitive Interface

Easy-to-use platform with fast onboarding. Chrome extension makes LinkedIn prospecting seamless.

Solid CRM Integrations

Native connections to Salesforce, HubSpot, Pipedrive, plus RESTful API for custom workflows.

More Affordable Than Enterprise Tools

Significantly cheaper than ZoomInfo for small teams needing basic contact data.

✗ Cons

Email Accuracy Varies

Marketing claims 98-99% accuracy, but independent testing suggests real-world results around 85-90%. Verify emails before large campaigns.

Pricing Not Transparent

Exact pricing requires a sales call. Add-ons for premium features can increase costs beyond base estimates.

No Native Email Sequences

Unlike Apollo.io, Seamless.AI doesn't include built-in outreach automation—you'll need separate tools.

US-Centric Coverage

Data quality is strongest for US markets. International coverage may require additional verification.

Contract Terms to Review

Annual contracts are standard. Review cancellation terms carefully before committing.

Seamless.AI vs Alternatives

How does Seamless.AI compare to other B2B sales intelligence tools?

FeatureSeamless.AIApollo.ioZoomInfoUpLead
Starting Price~$147/user/mo$49/user/mo~$15K/year$74/mo
Free Plan50 credits✓ Generous free tierNone5 credits trial
Email Accuracy85-90%~91%95-98%95% guaranteed
Phone Data422M+ numbersModerateStrongLimited
Email SequencesNo✓ Built-in✓ Built-inNo
Best ForPhone outreachAll-in-one stackEnterpriseEmail accuracy

Which Tool Is Right For You?

Apollo.io

Free Tier

Best for: Teams wanting an all-in-one platform with data, email sequences, and dialer built-in. Better email deliverability and transparent pricing. Rating: 4.5/5

ZoomInfo

Enterprise

Best for: Mid-market and enterprise teams with budget for premium data. Highest accuracy (95-98%) with advanced intent signals and orchestration. Rating: 4.1/5

UpLead

Accuracy Guarantee

Best for: Teams prioritizing email deliverability. 95% accuracy guarantee with credit refunds for bounced emails. Transparent pricing. Rating: 4.2/5

Reply.io

Sales Engagement

Best for: Teams needing AI-powered sales engagement with multichannel sequences. Combines outreach automation with contact data enrichment. Rating: 4.4/5

Cognism

GDPR-First

Best for: Teams selling into Europe or requiring strict GDPR compliance. Phone-verified mobiles with Diamond Data and strong EMEA coverage. Rating: 4.4/5

Lusha

Simple & Compliant

Best for: Teams wanting easy-to-use B2B contact data with strong GDPR compliance and global coverage. Simple Chrome extension for quick prospecting. Rating: 4.0/5

Jeeva AI

Agentic AI

Best for: Teams wanting end-to-end sales automation with agentic AI handling lead discovery, enrichment, multichannel outreach, and meeting booking autonomously. Rating: 4.1/5

Frequently Asked Questions

Seamless.AI offers a Free plan with 50 credits. The Basic plan is approximately $147/user/month (billed annually) with ~250 credits/month. Pro and Enterprise plans require a sales call for custom pricing. Add-ons like Autopilot and Buyer Intent may increase total costs.
Seamless.AI offers a free plan with 50 credits, which is useful for testing data quality. However, this is insufficient for ongoing prospecting campaigns—most active users need to upgrade to a paid plan within days of initial use.
Seamless.AI claims 98-99% accuracy, but independent testing suggests real-world email accuracy is closer to 85-90%. Phone number accuracy is approximately 60-70% usable. We recommend verifying emails before large outreach campaigns.
Yes. Seamless.AI offers native integrations with Salesforce, HubSpot, Pipedrive, and other CRMs. Pro and Enterprise plans include unlimited integrations, and a RESTful API is available for custom workflows.
Apollo.io is an all-in-one platform with built-in email sequences and dialer, while Seamless.AI focuses primarily on data discovery. Apollo typically offers better email deliverability (~91% vs 85-90%), while Seamless.AI has stronger phone number coverage. Apollo's pricing ($49-149/user/month) is more transparent than Seamless.AI's quote-based model.
Seamless.AI is best suited for small US-centric sales teams (2-5 SDRs) focused on phone outreach, teams that already have separate engagement tools and need additional contact data, and organizations that can independently verify email data before campaigns.
Final Verdict

Should You Try Seamless.AI?

Seamless.AI delivers on its core promise of real-time contact discovery with strong phone number coverage. The intuitive interface makes list-building fast, and the Chrome extension works smoothly on LinkedIn.

However, email accuracy doesn't match marketing claims, so plan to verify contacts before large campaigns. The lack of built-in sequences means you'll need separate tools for outreach automation.

Our Recommendation

Try the free plan to test data quality for your target market. If phone outreach is central to your strategy and you have a separate engagement platform, Seamless.AI can be a valuable supplementary data source. For an all-in-one solution, consider Apollo.io instead.

Try Seamless.AI Free →
4.1
★★★★☆
Good
About This Review: This review is based on platform testing, official documentation, and independent third-party analysis. Pricing verified January 2026. This review contains affiliate links—we may earn a commission at no extra cost to you.