Compare · Outbound Data Layer · Brief 78
Apollo vs Hunter vs Clay for Prospecting:
B2B Contact Data Tools for Solo Outbound (2026).
The data layer is the first decision in outbound architecture. Apollo is the all-in-one default — data + sequencing + CRM integrations from $49/month. Hunter is the precision tool — domain-based email finding with industry-leading accuracy from $34/month. Clay is enrichment orchestration for sophisticated multi-signal ICPs — powerful, but expensive ($185–$495/month) and often overkill at solo scale. Three-step decision framework: volume, targeting sophistication, and existing stack. Updated May 2026 — Clay pricing restructured to a two-currency model (Data Credits + Actions).
Updated: May 2026 · Pricing verifiedThe architecture first
Your contact data tool is fuel, not the engine. And most solos over-invest in data while under-investing in personalisation.
The outbound stack has three layers: the data layer (where you get contact and company info — this article), the sequencing layer (where you send and follow up — covered in the Cold Outreach OS), and the CRM layer (where you track pipeline — covered in the Modern CRM OS). The data layer choice determines your list quality ceiling, enrichment depth, and how cleanly data flows into your sequencer without manual re-keying.
The counterintuitive truth for most solos
Most solo consultants who struggle with outbound are not failing because they have bad data — they're failing because they're sending non-personalised sequences to good data. The tool choice is downstream of strategy. Apollo at $49/month outperforms Clay at $495/month if you're using Clay for a workflow that a targeted 50-contact list and a well-researched email would handle.
Product snapshots (2026)
Three tools, three distinct data architectures.
Apollo.io — The All-in-One Default
Full outbound platform — contact database (275M+ contacts, 73M+ companies), email sequencing, dialer, analytics, and CRM-lite. The most complete all-in-one option in this comparison. Best coverage in tech, SaaS, and professional services.
| Plan | Price | Key access |
|---|---|---|
| Free (Starter) | $0 | Limited exports, up to 2 sequences, Gmail only, 50 AI credits |
| Basic | ~$49/mo | 1,000 email credits, CRM integrations |
| Professional | ~$79/mo | Increased limits, A/B testing, advanced automation, dialer |
Apollo's credit system updated in 2025–26. Verify current pricing and plan names at apollo.io/pricing before committing. Email verification is included but should be run before every send — do not assume exported emails are send-ready.
Best for: Solos who want data + outreach in one platform — one tab, one bill, one learning curve. Apollo's free tier is genuinely useful for low-volume prospecting before committing to a paid plan. Watch out for: Credits reset monthly with no rollover. Unused credits disappear.
Hunter.io — Precision Email Finding
Purpose-built for one thing: finding and verifying professional email addresses for specific people at specific companies. Domain-based search, email finder by name + domain, auto-verification, and a growing Discover database. Not a full contact database — Hunter's strength is precision on known targets, not broad list building.
| Plan | Price (annual) | Credits/mo |
|---|---|---|
| Free | $0 | 50 |
| Starter | $34/mo | 2,000; auto-verification included |
| Growth | $104/mo | 10,000 |
Best for: Solos doing targeted, account-based outreach where they know the company but need the specific contact's verified email. Particularly strong for consulting-style outreach to 10–30 specific decision-makers. Hunter's email accuracy is meaningfully higher than Apollo's for niche industries. Watch out for: Hunter's Discover database is not as deep as Apollo's for broad prospecting. Wrong tool if you need to build lists from scratch by title + industry without knowing target companies first.
Clay — Enrichment Orchestration (Not a Prospecting Database)
Clay is not a contact database — it is an orchestration layer that pulls from 150+ data providers to build enriched contact records with multi-signal logic. You bring the list; Clay enriches it with verified emails, job titles, tech stack, funding history, trigger events, and custom AI-prompted signals.
The 2026 pricing restructure — two currencies
Clay uses Data Credits (for enrichment) and Actions (for orchestration). Plans: Free ($0, 100 Data Credits/month), Launch ($185/mo, 2,500 credits), Growth ($495/mo, 6,000 credits + CRM auto-sync). Verify at clay.com/pricing — plan names and credit allocations have changed multiple times in 2025–26.
The hard wall: CRM auto-sync requires the Growth tier at $495/mo. There is no workaround short of manual export/import. If CRM sync is part of your workflow, you are paying $495/mo minimum.
Best for: Solos with sophisticated ICPs requiring multi-signal enrichment — "founder-led B2B SaaS companies that raised a Series A in the last 12 months, use Salesforce, and posted a Head of Revenue role in the last 30 days." No other tool executes this logic. Watch out for: Clay is often overkill at solo scale. Free tier covers experimentation only. Launch ($185/mo) is real entry-level use. Growth ($495/mo) is the minimum for a fully integrated workflow.
Decision framework
Three steps to the right tool — volume, targeting sophistication, and existing stack.
Step 1 — Monthly outreach volume
Under 50/month: Hunter Starter ($34/mo) or Apollo free. 50–300/month: Apollo Basic or Professional ($49–$79/mo). 300+/month: Apollo Professional as baseline; Clay worth evaluating if enrichment needs are complex, but budget for Growth ($495/mo) or it won't integrate with your CRM.
Step 2 — Targeting sophistication
Simple (title + company + geography): Apollo handles this cleanly. Moderate (title + industry + company size + tech stack): Apollo with technographic filters (Professional tier). Sophisticated (multi-signal: role + funding + hiring signals + tech stack + trigger events): Clay is purpose-built for this — nothing else in this comparison comes close.
Step 3 — Existing stack compatibility
Already paying for a dedicated sequencer (Instantly, Lemlist): don't also pay for Apollo's sequencing. Use Apollo or Hunter for data only and plug into your existing sequencer. HubSpot or Pipedrive CRM: Apollo Basic+ or Hunter integrate cleanly. Clay requires Growth for CRM auto-sync.
| Scenario | Primary tool | Monthly cost |
|---|---|---|
| Getting started, under 50 outreach/month | Apollo free → Basic | $0–$49 |
| Precision account-based, known companies | Hunter Starter | $34 |
| All-in-one outbound, 50–300/month | Apollo Professional | $79 |
| Sophisticated multi-signal ICP enrichment | Apollo/LinkedIn SN + Clay Launch | $264+ |
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