Apollo-1 vs Sickle
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Apollo-1 compared with Sickle
| Detail | 
Apollo-1 | 
Sickle |
|---|
| What it does | Neuro-symbolic AI for enterprise agents that combine language understanding with symbolic logic in one integrated runtime
| Email MCP server for Claude, Cursor and other AI agents to access every mailbox you own
|
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| Stage | Established
| Not given
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| Founded | 2017
| Not given
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| Based in | US
| GB
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| Pricing model | Contact for pricing
| Free trial
|
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| Pricing | Not given
| Monthly: €8.99/month after 7-day free trial. Yearly: €30/year (€2.50/month equivalent, 72% savings). Includes both the Mac app and the MCP connector.
|
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| Key features | - One integrated runtime combining neural and symbolic systems
- Deterministic policy enforcement before action
- Complete execution trace for every turn
- Natural language program authoring with code generation
- Consistent decisions from identical inputs
- CPU-based logic execution with lightweight language models
- Managed service and custom enterprise deployment options
| - Search across multiple mailboxes simultaneously
- Read full email threads with conversation history
- Move, archive and mark emails as read
- Scoped permissions: read, change, and send separately
- Attach files up to 18 MB to drafts and emails
- Download and open email attachments
- Native macOS mail client included
- Support for multiple email providers
- Encrypted file handling during transfer
- Revoke access anytime within the hour
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| What makes it different | - Symbolic logic governs decisions instead of neural weights
- Lower operational costs through CPU-based logic and lightweight models
| - Works with any MCP client, not locked to one AI platform
- No installation required; works on macOS, Windows and Linux
- Access unlimited email accounts simultaneously in one connection
- Send emails with opt-in permission and approval workflow
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 20 ● no change since last check | 13 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 11 | 8 |
|---|
| Citation Flow (Majestic) | 33 | 22 |
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| Referring domains (Majestic) | 155 | 17 |
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5 details filled in for both companies.
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