Seamless.AI vs Apollo.io
Seamless.AI focuses on ai-powered contact finding and email verification. Apollo.io is built for outbound prospecting and email sequences. Different tools, different use cases — here's how they compare.
Choose Seamless.AI if…
- You want AI-assisted contact finding with continuous data verification
- You need direct dial phone numbers at scale
- You want integration with Salesforce and HubSpot for prospecting workflows
Choose Apollo.io if…
- You're building outbound lists from scratch using ICP filters
- You want email sequencing and prospecting in one platform
- You have a limited budget and need the most contacts for the price
Seamless.AI vs Apollo.io — Feature comparison
| Feature | Seamless.AI | Apollo.io |
|---|---|---|
| Category | Contact finder | Prospecting database |
| Primary use case | AI-powered contact finding and email verification | Outbound prospecting and email sequences |
| Data freshness | Database — periodic refresh | Database — periodic refresh |
| Data depth | High | High |
| GDPR compliance | Claimed , US infra | Claimed , US infra |
| Pricing tier | From $147/month | Free tier + from $49/month |
| Free plan | No | Yes — limited |
Different tools for different jobs
Seamless.AI is built for ai-powered contact finding and email verification. Seamless.AI is a B2B sales intelligence platform using AI to provide real-time contact data, verified emails, and direct dials for sales teams.
Apollo.io serves a different purpose: outbound prospecting and email sequences. Apollo.io is a B2B sales intelligence platform combining a 275M+ contact database with email sequencing, AI prospecting, and CRM integrations.
💶 Pricing comparison
Both Seamless.AI (From $147/month) and Apollo.io (Free tier + from $49/month) are in a similar pricing tier.
20–30% of B2B contacts change roles every year. Neither Seamless.AI nor Apollo.io is designed to continuously monitor your existing CRM for job changes and update records automatically — that's a different tool category.
🇪🇺 GDPR and data compliance
Neither Seamless.AI nor Apollo.io has a particularly strong GDPR documentation posture — both rely on US infrastructure.
For European teams or those with EU customers requiring documented sub-processor chains, the compliance posture of your enrichment vendor matters. Make sure to request a DPA and sub-processor list before committing.
Related comparisons
Enrich-CRM — real-time CRM enrichment for your existing contacts
Seamless.AI and Apollo.io are both data tools. Enrich-CRM does something different: it enriches the contacts you already have in your CRM — in real-time, continuously, from the live web. Proprietary LLM on AWS EU Paris (no OpenAI, no Anthropic). 250+ company datapoints, 50+ contact datapoints, continuous job change detection, intent signals. Native HubSpot integration, plus Clay, Salesforce, Zapier, Make, n8n, CSV, and API.
From €29/month, 100 free credits, no annual contract. Full DPA and sub-processor documentation at our Trust Center.