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Lead agents, costed with the add-ons included.
A solo outbound stack has two halves: finding and enriching the right prospects, then sending sequences and triaging replies so you only talk to interested people. Pricing pages in this category lie by omission, so every cost here is built at 500 and 2,000 prospects a month — mandatory add-ons included.
One sender · low ≈ 500, typical ≈ 2,000 prospects/month — add-ons included · Every figure from the vendor’s own pricing page
| # | Agent | Low | Typical | Billed | No-code | Solo fit |
|---|---|---|---|---|---|---|
| 1 | Apollo.ioOne database, sequencer and dialer for a founder who wants outbound without stitching tools together | from $49 | from $49 | per seat | Solo-Ready | |
| 2 | InstantlyFlat-fee cold email sending with unlimited mailboxes, plus a lead database sold on credits | from $94 | from $194 | per prospect | Solo-Ready | |
| 3 | LemlistMultichannel sequences across email, LinkedIn and calls, with warm-up and a built-in lead database | from $69 | from $109 | per seat | Solo-Ready | |
| 4 | SmartleadDeliverability-focused cold email sending with unlimited mailboxes and agency-grade infrastructure | from $98 | from $153 | per prospect | Solo-Ready | |
| 5 | Persana AIClay-style enrichment tables and AI research agents at a lower entry price, with sending via integrations | from $68 | from $68 | per credit | Small-Team Ready | |
| 6 | AiSDRA pay-per-prospect autonomous SDR that researches, writes, sends and works replies across email and LinkedIn | from $750 | from $3000 | per prospect | Small-Team Ready | |
| 7 | Artisan AIAva, an autonomous AI BDR that prospects, writes, sends and books, now with a self-serve startup tier | from $250 | from $1000 | per credit | Small-Team Ready | |
| 8 | ClayA spreadsheet-like enrichment workspace that chains 150+ data providers and AI research into one prospect list | from $167 | from $167 | per credit | Technical | |
| 9 | HubSpot Breeze Prospecting AgentAn AI prospecting agent inside HubSpot CRM that watches signals, researches accounts and drafts outreach | from $515 | from $2015 | per seat | Small-Team Ready | |
| 10 | Seamless.AIReal-time B2B contact search with verified emails and mobiles, sold on annual, quote-only licenses | Quote only | Quote only | quote | Small-Team Ready |
Ranked picks
Reasons on every listing.Also covers this job
What to look for
- Total cost at YOUR volume — data credits, warm-up domains and verification included
- Deliverability controls: sending limits, warm-up, custom tracking domains, bounce protection
- Reply triage quality — you want to read 5 interested replies, not 200 notifications
- Whether sending is approve-first or fully autonomous, and what the guardrails are
- Where the prospect data comes from and how fresh/verified it is
Questions, answered
Is AI cold outreach legal / will it burn my domain?
Outreach must comply with the rules where your recipients are (CAN-SPAM in the US, stricter consent rules elsewhere) — the tools don't transfer that responsibility. Domain burning is a real risk: reputable setups send from separate warmed domains, never your main one. Listings that don't support separate sending domains say so in their cons.
Why do so many of these vendors hide their pricing?
Because the category grew up selling to sales teams with budgets, via demos. For a solo founder that opacity is a cost in itself — you can burn a week in sales calls. We mark those listings 'Pricing not published — quote only' and rank transparent tools above them for solo use.
Do I need Clay AND a sending tool?
Clay is primarily enrichment and orchestration — it builds and enriches lists; most solos pair it with a sender like Instantly or Smartlead. All-in-one SDR agents (for example AiSDR) bundle both but give you less control over deliverability. The listings state which half each product covers.
How many prospects should a solo founder contact a month?
Fewer than the tools encourage. 500–2,000 well-targeted prospects with genuine personalisation outperforms 20,000 sprayed — for reply quality, deliverability and the hours you spend on follow-up. That's why our cost scenarios use those volumes.
Another job to fill? Do the Books · Answer the Phone & Book · Run Operations & Workflows · Answer Customers · Run Admin & Scheduling