Sickle vs Terminus
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 Terminus
| Detail | 
Sickle | 
Terminus |
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| What it does | Email MCP server for Claude, Cursor and other AI agents to access every mailbox you own
| Infrastructure to build and run apps, agents, skills and services
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| Stage | Not given
| Not given
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| Founded | Not given
| Not given
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| Based in | GB
| Not given
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| Pricing model | Free trial
| Free
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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
| - CLI for local development and deployment
- Apps with offline-capable records that sync across devices
- Long-running agents working 24/7
- Reusable skills that work across platforms
- Hosted and external services integration
- Free hosting
- Local testing with terminus dev simulator
- Background jobs, schedules and webhooks
- Support for TypeScript, Rust, Python, Go, C and C++ services
- Shared spaces for team collaboration
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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
| - Lego-style composable components that connect together
- Free hosting forever for all creations
- Unified workflow from local development to published releases
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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 | 3 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 8 | 5 |
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| Citation Flow (Majestic) | 22 | 26 |
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| Referring domains (Majestic) | 17 | 4 |
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4 details filled in for both companies.
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