Autonomous Sales: Building an AI Outreach Agent with Apollo + AgentMail

Sales outreach is a natural fit for AI agents: it's repetitive, requires personalization, and has clear metrics. This tutorial builds a fully autonomous sales agent that prospects, writes, and sends — paying per-action via x402.

The Agent Pipeline

Apollo (prospecting) → LLM (personalization) → AgentMail (sending)
     $0.02/lead           $0.01/email            $0.005/send

Total cost per personalized outreach: ~$0.035

Step 1: Find Leads with Apollo

async function findLeads(criteria: object) {
  const result = await m.pay({
    url: "https://api.apollo.io/v1/people/search",
    method: "POST",
    body: JSON.stringify({
      ...criteria,
      per_page: 25,
    }),
  })
  return result.data.people
}

Apollo provides rich prospect data: name, title, company, email, LinkedIn, and more. Cost: ~$0.02 per lead.

Step 2: Generate Personalized Emails

async function writeEmail(lead: any, context: string) {
  const result = await m.pay({
    url: "https://openrouter.ai/api/v1/chat/completions",
    method: "POST",
    body: JSON.stringify({
      model: "anthropic/claude-sonnet-4-6",
      messages: [{
        role: "user",
        content: `Write a personalized cold email to ${lead.name}, ${lead.title} at ${lead.company}.
Context: ${context}
Keep it under 150 words. Be specific about their company.`,
      }],
    }),
  })
  return result.data.choices[0].message.content
}

Step 3: Send via AgentMail

async function sendEmail(to: string, subject: string, body: string) {
  const result = await m.pay({
    url: "https://api.agentmail.dev/v1/send",
    method: "POST",
    body: JSON.stringify({
      to,
      subject,
      body,
      from: "agent@yourcompany.com",
    }),
  })
  return result.data
}

Full Pipeline

async function runOutreach(criteria: object, context: string) {
  const leads = await findLeads(criteria)

  for (const lead of leads) {
    const email = await writeEmail(lead, context)
    await sendEmail(
      lead.email,
      `Quick question about ${lead.company}`,
      email
    )
    // Respect rate limits
    await new Promise(r => setTimeout(r, 2000))
  }

  return { sent: leads.length }
}

Cost Analysis

|--------|-----------|--------------|

Compare this to a human SDR's cost: $200-400/day for similar output volume. The agent costs 98% less.

Safety Controls

Results Tracking

Monitor via Mithril dashboard: