Apollo is the best AI tool for sales prospecting: a 200M+ contact B2B database, email sequencing, enrichment, and a dialer in one platform, with a free tier and paid plans from $49/user/mo. For most SMB outbound motions, Apollo alone covers list, sequence, and send.
The rest of this stack is for scaling past that: Clay when personalization at scale is the edge, Instantly when volume and deliverability are, lemlist when your buyers live on LinkedIn. Every price below is verified — and each tool carries the rate operators charge to run it for clients, because done-for-you prospecting is one of the most proven AI service businesses going.
The tools
Apollo.io
Apollo is the default prospecting platform for a reason: the database, sequences with A/B testing, a Chrome extension for LinkedIn, and intent data live in one login. Build saved searches per ICP and the pipeline refills itself.
Price: free plan with monthly credits; Basic $49/user/mo annual, Professional $79/user/mo annual. What operators charge: $1,500-$3,000/mo for done-for-you outbound, or $100-$200 per booked meeting on hybrids.
Clay
Clay waterfalls 100+ data providers for maximum contact coverage, and Claygent — its AI research agent — scrapes and summarizes anything on the web into spreadsheet columns. It's the engine behind personalization that doesn't read like a mail merge.
Price: free tier (100 credits/mo); Launch from $167/mo, Growth from $446/mo. What operators charge: $2,000-$5,000/mo GTM-engineering retainers; one-off system builds run $3,000-$10,000.
Instantly
Instantly is built for volume: unlimited sending accounts with inbox rotation, automated warmup, and a unibox for replies across every inbox. Deliverability tooling is the product — your campaigns land because the infrastructure is doing its job.
Price: Growth $47/mo, Hypergrowth $97/mo. What operators charge: $1,500-$3,000/mo per client, or $150-$300 per positive reply on performance deals.
Hunter
Hunter is the simplest paid entry into list building: Domain Search finds everyone at a company, Email Finder locates specific people, and Email Verifier scrubs bounces before you send. A 2,000-contact verified list is a day of work on the Starter plan.
Price: free tier (50 credits/mo); Starter $34/mo annual (2,000 credits). What operators charge: $500-$1,500 per list project, or $400-$750/mo for fresh leads monthly.
lemlist
lemlist mixes email, LinkedIn visits, invites, messages, and calls in one sequence — plus personalized images and landing pages per prospect. When your buyer checks LinkedIn before replying to anything, this is the stack.
Price: Email plan $39/mo; Multichannel $109/user/mo ($87 annual). What operators charge: $1,500-$2,500/mo per client — the LinkedIn layer justifies the premium over email-only outbound.
PhantomBuster
PhantomBuster is the raw-data layer: 100+ prebuilt Phantoms scrape LinkedIn, Sales Navigator, and Google Maps searches into lead lists. Local-business lists from Maps are an underrated wedge for selling to SMB niches.
Price: Starter $69/mo ($56 annual, 20 execution hours). What operators charge: $1,000-$2,500 per lead-list sprint, or fold it into a $2K/mo retainer as the sourcing engine.
A workflow that sells
The done-for-you outbound system — the most-sold AI service in B2B right now:
- Source with Apollo (or PhantomBuster for niche scrapes). Saved searches per ICP, exported and verified.
- Enrich and personalize with Clay. Claygent researches each account and writes a first line referencing something real — a job post, a funding round, a tech-stack signal.
- Send with Instantly. Three to five secondary domains, 9-15 inboxes warmed for 2-3 weeks, then 2-3 angle tests per month with replies triaged in the unibox.
The client's sales team wakes up to qualified replies. You run the machine.
The money
Operators charge $1,500-$3,000/mo per client for this system. Infrastructure — domains, inboxes, Instantly, a Clay seat — runs $200-$400/mo per client, so margin sits near 80%. One operator with templated playbooks can run 5-8 clients before hiring.
The qualified-lead problem is also your problem to solve for yourself — and this stack is how operators fill their own pipeline before they ever sell it. This is one offer; AI Operator Academy is where operators build the full system — packaging, pricing, fulfillment, and a peer group running the same campaigns — at $999/yr.
The agency-scale version of this stack (white-label dashboards, multi-client workspaces) lives on the AI tools for lead generation page, and how to start an AI agency covers landing the first client.
FAQ
How do I actually get qualified leads, not just lists?
Qualification happens in the targeting and the offer, not the tool. A tight ICP filter in Apollo plus a Clay enrichment layer that disqualifies bad fits before sending beats any volume play. If replies are unqualified, the list definition is wrong — fix it there.
What does it cost to start prospecting with AI?
Under $100/mo: Apollo's free tier or Hunter Starter at $34/mo for lists, Instantly Growth at $47/mo for sending. Add Clay when personalization becomes the constraint, not before.
What should I charge to run outbound for a client?
$1,500-$3,000/mo is the established range for done-for-you outbound, or $100-$300 per booked meeting if the client wants performance pricing. Charge setup ($1,000-$2,000) separately — domain warmup and list building are real work before the first send.
Is cold email still worth it in 2026?
Yes, but the bar moved: warmed infrastructure, verified lists, and research-based personalization are table stakes. The tools handle all three now — which is exactly why clients pay operators instead of burning their primary domain learning the hard way. Reply rates reward the operators who treat deliverability as the product.