Enter your Ideal Customer Profile, discover matching prospects from 270M+ contacts, get waterfall-enriched emails and direct dials, and receive AI-generated multi-channel sequences — email, LinkedIn, and calling — completely free.
Launch Tool Free — sequencer.mantyl.aiThe ICP-to-Sequence Generator replaces the 4–6 tools most teams stitch together for outbound sales: a lead database, enrichment layer, email verifier, copywriter, and sequencer. It collapses all of that into a single workflow that takes your ICP parameters, discovers matching prospects from Apollo's 270M+ contact database, runs waterfall email enrichment through multiple providers, delivers verified phone numbers asynchronously, and uses Claude to generate a complete multi-channel outbound sequence for each prospect — personalized with their name, role, company, and industry context.
No accounts to create, no software to install, no credit card required. Open the tool, fill in your ICP, and get ready-to-send sequences in minutes.
Fill in your Ideal Customer Profile parameters. Choose from 156 industries across 14 categories (Apollo taxonomy), select one of 11 company size intervals with automatic segment mapping (SMB, Midmarket, or Enterprise), and specify the job titles and geographies you want to target. You can also filter by tech stack and custom keywords to narrow your search further.
The more specific your ICP, the better. The tool uses your industry, company size, job titles, geography, tech stack, and keyword criteria to search Apollo's 270M+ contact database. Narrow targeting produces better results than broad sweeps.
Set up how you want your outbound sequence to read. Pick your tone (Professional, Casual, or Simple), select your channels (Email, LinkedIn, Calling — or any combination), choose between Auto or Manual email send types, and add your product description, pain point, proposed solution, and CTA language so the AI can weave in relevant messaging.
You also fill in your sender profile — name, title, company, phone, LinkedIn, and Calendly link. This gets threaded through every touchpoint so the copy sounds like it came from you, not a template.
Hit generate and the tool runs a 4-step waterfall enrichment pipeline to find and verify prospect data. Apollo searches for matching contacts, then enriches each one individually. Any prospects still missing emails go through Hunter.io for gap-fill, followed by a proprietary pattern inference engine that constructs and verifies emails using common corporate formats. Phone numbers arrive asynchronously via webhook and stream into your results in real-time.
Waterfall enrichment means maximum coverage. Each step only fires for prospects that the previous step couldn't fully enrich. This keeps API costs low while ensuring every prospect gets the most complete data possible — verified email, direct dial, LinkedIn URL, and company details.
The prospect table displays verification badges next to every email so you can see data quality at a glance. A green checkmark means the email is verified deliverable. A yellow tilde means likely valid but unverified. Phone numbers show whether they're direct dials or mobile numbers. Every prospect also links to their LinkedIn profile when available.
Cost control built in: The tool caps at 20 prospects per run. Each run uses approximately 20 Apollo credits, 0–10 Hunter lookups (free tier), and $0.15–$0.30 in Claude API costs.
Claude generates a complete multi-channel sequence for every prospect, personalized to their specific role, company, and industry. Each sequence follows an Opening → Value Add → Closing arc with your tone, product context, and sender sign-off baked in. Copy any touchpoint with one click, or export everything to CSV for your outreach tool of choice.
Behind the scenes, the tool uses a waterfall enrichment strategy — each provider fills gaps left by the previous one, maximizing data coverage without redundant API spend.
The pattern engine is particularly powerful: it detects email formats from contacts already found at the same company domain (e.g., if it knows john.doe@acme.com, it infers first.last for other Acme prospects). When no pattern can be detected, it falls back to frequency-weighted guessing based on the most common corporate email formats, then verifies each candidate through Hunter's Email Verifier. Every prospect exits the pipeline with an email — no gaps.
Every generated sequence follows a proven three-phase structure. The AI doesn't just write random emails — it builds a deliberate narrative arc across your touchpoints that moves the prospect from curiosity to conversation.
Channel assignment rotates through your selected channels automatically. The first touchpoint is always email, and the last touchpoint defaults to calling if you have it enabled — because humans close deals, not inboxes.
The tool includes 156 industries organized across 14 categories, matching Apollo's taxonomy so your targeting is as granular as your CRM. Whether you're selling to fintech startups or enterprise healthcare systems, the industry filter narrows your prospect pool to exactly the right vertical.
Choose from 11 company size intervals, each automatically mapped to a segment: SMB, Midmarket, or Enterprise. This means the AI understands not just how big the company is, but how to talk to them. The messaging for a 10-person startup reads very differently from the messaging for a 5,000-person enterprise — and the tool handles that automatically.
Three tone presets let you match your brand voice without writing a single word of copy. Professional is polished and buttoned-up. Casual is conversational and warm. Simple is direct and stripped of fluff. The tone carries through every touchpoint in the sequence.
If your sequences go into an automated outreach tool (Instantly, Lemlist, Apollo), choose Auto and the copy is written for that context — no references to "I just sent you" or timing-dependent language. If you're sending manually, choose Manual for a more personal, in-the-moment feel.
Every email in the results table comes with a verification badge so you know exactly what you're working with. Green checkmarks indicate verified deliverable emails from Apollo or Hunter. Yellow tildes mark emails that are likely valid but haven't been independently verified. This transparency lets you prioritize your outreach — start with verified contacts, then work your way through the rest.
Phone numbers are enriched asynchronously via Apollo's webhook system and stream into your results table in real-time. Each number is tagged as either a direct dial or mobile so you know which type of call you're making. Numbers typically arrive within 30–90 seconds of your initial search.
Export your prospects and their sequences as a CSV file. Columns include all prospect data (name, title, company, work email, work phone, LinkedIn) plus the full sequence copy — ready to import into any outreach platform.
The whole point is speed. Traditional outbound requires hours of research, writing, and personalization per prospect. This tool compresses that into minutes. Define your ICP once, and you have 20 personalized, multi-channel sequences with verified contact data ready to deploy.
| Layer | Technology | What It Does |
|---|---|---|
| Frontend | React 18 + Vite 6 | Fast single-page app with real-time progress indicators |
| Backend | Netlify Functions | 4 serverless API routes — no infrastructure to manage |
| Prospect Data | Apollo.io API | Search 270M+ contacts and enrich with email, phone, company data |
| Email Gap-Fill | Hunter.io API | Email Finder + Email Verifier for maximum email coverage |
| Email Inference | Pattern Engine | Detect and construct emails from common corporate formats |
| Copy Generation | Claude API (Sonnet) | Personalized sequence copy for every prospect with adaptive rate limiting |
| Phone Delivery | Apollo Webhook | Async direct dial and mobile number enrichment via polling |
| Deployment | Netlify | Git-push deploy with automatic SSL and edge CDN |
The tool is built as a full-stack serverless application by the Mantyl team. Prospect discovery hits Apollo's 270M+ database with your ICP filters. Emails are enriched through a waterfall pipeline — Apollo first, then Hunter.io for gap-fill, then a pattern inference engine that constructs and verifies emails using common corporate formats. Copy generation uses Claude with a carefully crafted system prompt that includes your tone, sender profile, product context, and sequence structure. The generation engine uses adaptive rate limiting that starts parallel and falls back to sequential with pacing — so it completes reliably on any API tier.
Here's what outbound prospecting actually looks like without this tool — and what it looks like with it.
That's a 50x speed improvement. And because the copy is AI-personalized to each prospect's role and company, it doesn't read like a template. It reads like you spent 15 minutes researching them — except you didn't.
This tool is designed for SDRs, AEs, founders, and anyone who runs outbound. It's especially powerful in these scenarios:
You want to see if a new vertical or segment responds to your messaging. Instead of spending a week building a list and writing copy, generate 20 personalized sequences with verified contact data in 5 minutes and see what sticks.
You've validated your ICP and need to generate high-quality sequences at volume. Run the tool multiple times with different ICP variations to build a pipeline of prospects with verified emails, direct dials, and ready-to-send copy.
You're a founder wearing ten hats and outbound keeps falling to the bottom of the list. This tool turns a full afternoon of prospecting into a 5-minute task so you can get back to building.
You run an agency and need to spin up outbound campaigns for multiple clients quickly. Each run can use different ICP parameters, product descriptions, and sender profiles — one tool, many clients.
No sign-up, no credit card, no setup. Open the tool and generate your first personalized outbound sequence with verified prospect data in under 2 minutes.
Launch the Generator →The ICP-to-Sequence Generator is just the starting point. If you need a fully automated outbound engine that runs on autopilot — enrichment, sequencing, sending, follow-ups, and CRM updates all connected — that's what Mantyl builds for clients. The tool gives you a taste of what's possible; a custom build gives you the whole system.
Our team can build you a complete automated outbound system — from ICP to booked meeting — tailored to your exact workflow.
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