Sickle vs Behavioral Signals
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Sickle compared with Behavioral Signals
| Detail | 
Sickle | 
Behavioral Signals |
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| What it does | Email MCP server for Claude, Cursor and other AI agents to access every mailbox you own
| Speech emotion, behavior, and voice deepfake detection API
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| Stage | Not given
| Established
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| Founded | Not given
| Not given
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| Based in | GB
| US
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| Pricing model | Free trial
| Contact for pricing
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| Pricing | 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.
| Not given
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| Key features | - 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
| - Emotion recognition from speech
- Voice deepfake detection
- Speaker attributes analysis
- Language-agnostic processing
- Real-time processing at enterprise scale
- Cloud and on-premises deployment
- Behavioral signals combination
- Agent-customer matching via PAIR
- Custom domain-specific models
- Behavioral profiling and recommendations
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| What makes it different | - 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
| - Combines acoustic and behavioral cues for broader deepfake detection signal
- Language-agnostic detection without per-language model maintenance
- Real-time processing suitable for live calls
- Custom models built by expert team on same engine
- Agent-customer compatibility matching for better call outcomes
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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) | 13 ▲ +1 (up) since last check | 46 ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 8 | 12 |
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| Citation Flow (Majestic) | 22 | 19 |
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| Referring domains (Majestic) | 17 | 196 |
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5 details filled in for both companies.
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