Warmbly vs Prosp
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Warmbly compared with Prosp
| Detail | 
Warmbly | 
Prosp |
|---|
| What it does | Open-source cold email and warmup platform
| AI-powered LinkedIn outreach that writes personalized messages and voice notes for each prospect
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| Stage | Startup
| Not given
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| Founded | 2024
| Not given
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| Based in | GB
| Not given
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| Pricing model | Freemium
| Freemium
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| Pricing | Not given
| Per-account monthly billing: 1-5 accounts $79.99/month, 6-30 accounts $59.99/month, 31+ accounts $39.99/month. Annual billing discounts available: Starter $61.99/month (save $234/year), Agency $45.99/month (save $182/year), Scale $30.99/month (save $117/year). 14-day free trial included with all pla
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| Key features | - Mailbox warmup with automatic reputation building
- Campaign sequences with A/B testing
- Unified inbox with reply classification
- Deliverability tracking and inbox placement tests
- Automation workflows with conditional logic
- Per-mailbox safety caps and throttling
| - AI personalization from prospect profile and activity data
- AI voice notes in your cloned voice
- Unified inbox for multiple accounts and clients
- Dedicated residential proxy per account
- Built-in lead finder
- Unlimited sequences and campaigns
- Multi-step LinkedIn actions with conditional branching
- Campaign and account analytics with AI recommendations
- Account rotation and human-paced sending
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| What makes it different | - Fully open-source codebase under Apache 2.0, readable on GitHub
- Self-hostable with one command or cloud-hosted options
- Unlimited mailboxes on paid plans, no per-mailbox fees
- Transparent health rules with full explanations for throttling
- Built in public with public changelog and no inflated metrics
| - AI voice notes channel that prospects reply to most
- Messages personalized from real profile and activity research
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 26 ● no change since last check | 37 ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 0 | 7 |
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| Citation Flow (Majestic) | 28 | 33 |
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| Referring domains (Majestic) | 44 | 201 |
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4 details filled in for both companies.
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