| What it does | The outreach platform for your AI agent
| Cold email that knows when to stop, slow down, follow up, switch inboxes and back off
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Free trial
| Freemium
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| Pricing | Hosted Sellbird is in early access with pricing to be shared before launch. Email accounts and AI plans are billed separately by their providers. Domain purchases and additional inboxes incur separate charges.
| Trial: Free for 7 days (1 connected mailbox, 600 email sends/month, 200 contacts, 1 team member). Starter: $29/month (unlimited connected mailboxes, 7,500 email sends/month, 2,000 contacts, 1 team member). Growth: $39/month (unlimited connected mailboxes, 40,000 email sends/month, 15,000 contacts, 3
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| Key features | - Find companies matching your customer profile with buying signals
- AI agent integration over MCP protocol
- Personalized email drafting from research
- Draft approval workflow by default
- Email warmup and sending infrastructure
- Reply collection and sorting
- Agent-drafted reply responses
- Support for Google Workspace and Microsoft 365
- CSV export of contacts and lists
| - Automated multi-step email sequences with configurable wait days
- Self-balancing sender rotation across multiple connected mailboxes
- Automatic reply detection to stop follow-ups when prospects respond
- Pre-launch validation checks for contacts, senders and quotas
- Campaign analytics tracking sent, replies, bounces, opens, clicks and unsubscribes
- Safe Mode ramp-up for gradual mailbox warm-up over ten days
- Hard bounce and unsubscribe suppression across entire workspace
- Support for Gmail, Outlook and custom SMTP connections
- AI-assisted email drafting for openers and follow-ups
- CSV contact import with format, duplicate and field validation
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| What makes it different | - Works with the AI agent you already use—no competing AI, no additional AI costs
- Human approval on by default—every email, purchase and reach requires human approval
- Open-source and self-hostable version is free
- Email verification works independently without running full outreach
- Agents work offline after scheduling—emails send and replies collect 24/7
| - No per-mailbox fees on paid plans, only charges for sends and contacts
- Automatic guardrails that pause campaigns when bounce rates exceed threshold or providers throttle
- Honest about deliverability with no guarantees, emphasizing user control and visibility
- Unified workspace managing sequences, rotation, contacts and analytics without unnecessary complexity
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 0 | 18 |
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| Referring domains (Majestic) | 0 | 2 |
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