Seamless.AI vs Apollo

Detailed side-by-side comparison to help you choose the right tool

Seamless.AI

🟡Low Code

Sales & Marketing AI

Seamless.AI: AI-powered sales prospecting platform for finding verified business leads and contact information. Automates lead generation workflows.

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Starting Price

$0 Free plan; student promotional plan is $19.99/month; Pro and Enterprise have no exact public dollar price and require contact-sales pricing

Apollo

Sales & Marketing AI

Apollo combines a 265M+ B2B contact database with AI-powered prospecting, multi-channel sequence automation, and revenue analytics to accelerate sales development from lead discovery through closed deals.

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Starting Price

Custom

Feature Comparison

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FeatureSeamless.AIApollo
CategorySales & Marketing AISales & Marketing AI
Pricing Plans8 tiers8 tiers
Starting Price$0 Free plan; student promotional plan is $19.99/month; Pro and Enterprise have no exact public dollar price and require contact-sales pricing
Key Features
    • 265M+ B2B contact database
    • AI-powered prospect discovery
    • Multi-channel sequence automation

    Seamless.AI - Pros & Cons

    Pros

    • Purpose-built for sales prospecting rather than general task management, making it more relevant for teams focused on business lead discovery.
    • Publishes a free 1-user plan with 50 credits, giving buyers a low-friction way to test contact search before a paid rollout.
    • Pro plans start at 10,000 annual credits according to the pricing FAQ, which gives buyers a concrete baseline for credit-based comparison.
    • Supports direct revenue-stack workflows through listed integrations such as Salesforce, HubSpot, Microsoft Dynamics 365, Outreach, Salesloft, Pipedrive, Zoho CRM, Greenhouse, Zapier, and the Chrome Extension.
    • Combines prospecting data with workflow modules such as Connect, Pitch Intelligence, Job Changes, API access, Data Enrichment, Buyer Intent, and Autopilot.
    • Enterprise plan is positioned for larger teams with unlimited users, unlimited exports, custom packages, customer success, and enterprise support.

    Cons

    • The Pro and Enterprise plans do not publish exact dollar pricing on the checked pricing page, so buyers must contact sales for quotes.
    • Several advanced modules, including AI Assistant, Data Enrichment, Autopilot, and Buyer Intent Data, are shown as add-ons and their exact public dollar costs are not listed on the checked pricing page.
    • The pricing page confirms credits but does not publish every credit overage cost, renewal rule, or package price.
    • Contact accuracy and verification quality are central to this type of tool, but buyers still need to test results against their own target accounts and territories.
    • Teams with strict data governance or compliance needs should review data sourcing, processing, retention, and permitted outreach use before deployment.

    Apollo - Pros & Cons

    Pros

    • Massive contact database of 265M+ verified B2B contacts with 65+ filter attributes, reducing the need for a separate data vendor like ZoomInfo or Lusha.
    • All-in-one platform consolidating prospecting, email/phone/LinkedIn sequencing, dialer, meeting scheduler, and analytics, so teams can retire multiple point tools.
    • Genuinely useful free tier with unlimited email credits and basic sequences, making it practical for solo founders and early-stage SDRs to actually test the product.
    • Strong native integrations with Salesforce, HubSpot, Gmail, Outlook, LinkedIn, and Slack, plus a widely-used Chrome extension for prospecting from any webpage.
    • AI features (email writer, deal assistant, power-ups, intent scoring) are bundled into standard plans rather than locked behind expensive add-on SKUs.
    • Per-seat pricing with monthly billing available is significantly cheaper than enterprise competitors, with published rates instead of forced sales calls.

    Cons

    • Data accuracy is inconsistent for senior executives, smaller companies, and non-US regions, where bounce rates and outdated titles are noticeably higher than premium providers.
    • Email deliverability can suffer at scale if sequences aren't carefully warmed up and throttled, and Apollo's own sending reputation has drawn spam complaints in some industries.
    • The interface bundles so many features that new users face a steep learning curve, and advanced workflow and enrichment features require meaningful configuration time.
    • Credit and export limits on lower tiers can be restrictive for high-volume outbound teams, pushing real users onto Organization or Unlimited plans faster than expected.
    • Support response times on lower-tier plans are slow, with chat and ticket-only access and no dedicated CSM until higher-paid tiers.

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    🔒 Security & Compliance Comparison

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    Security FeatureSeamless.AIApollo
    SOC2✅ Yes
    GDPR
    HIPAA
    SSO✅ Yes
    Self-Hosted❌ No
    On-Prem❌ No
    RBAC✅ Yes
    Audit Log
    Open Source❌ No
    API Key Auth✅ Yes
    Encryption at Rest✅ Yes
    Encryption in Transit✅ Yes
    Data Residency
    Data Retention
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