AI Agents & Infrastructure
Sickle
Email MCP server for Claude, Cursor and other AI agents to access every mailbox you own
- 0community votes
- 13DR by Ahrefs +1 (up) since last check
Ahrefs Domain Rating signal 13 Nov 2026, signal shifted 13 Nov 2026.
Remote MCP server that connects Gmail, Outlook, iCloud, Fastmail, Yahoo and any IMAP mailbox to Claude, Cursor, Codex and other AI agents.
What it is
Sickle is a remote MCP server that gives AI agents like Claude, Cursor, and Codex access to your email accounts. It connects multiple mailboxes at once—Gmail and Outlook through OAuth, plus iCloud, Fastmail, Yahoo, and any IMAP server—with no installation required. The connector works on macOS, Windows, and Linux.
Your agent can search across all your mailboxes, read full email threads, move and archive messages, and draft or send emails with your approval. Permissions are granular: you can grant read, change, and send access separately, and revoke access anytime. Files up to 18 MB can be attached to drafts or sent emails, with encryption in transit and deletion after sending.
Sickle also includes an optional native macOS mail client with the same account. The service runs on a single subscription covering both the connector and the app, with a 7-day free trial.
Systems
- 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
Pricing
Pricing model: Free trial
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.
Want to see what Sickle does next? Follow them for milestones, new products and stories by email.
Sickle metrics
Signal readout for sickle.app: Ahrefs Domain Rating and Majestic link signals, arrows for the change since the last scan.
- 13 Domain Rating +1 (up) since last check
- 8 Trust Flow no change since last check
- 22 Citation Flow no change since last check
- 17 Referring domains no change since last check
- 108 External backlinks no change since last check
Ahrefs Domain Rating signal 13 Nov 2026, signal shifted 13 Nov 2026. Strongest signal topic: Computers/Programming/Languages (8). Majestic signal 30 Oct 2026, signal shifted 30 Oct 2026. Link signals from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Sickle domain signal
Show the signal details
Public RDAP record, last read 9 Nov 2026, 05:59 UTC.
- Domain age 3 years
- Registered
- Expires
- Registrar Squarespace Domains II LLC.
- DNSSEC Not signed
Sickle post-launch signal
The record for Sickle after its launch on Nexora Launch (30 October 2026), from the readings we keep.
- 13 Domain Rating (Ahrefs) +7 (up) since launch
at launch: 6 (30 Oct 2026); latest: 13 Nov 2026 - 8 Trust Flow (Majestic)
first measured 30 Oct 2026 - 17 Referring domains (Majestic)
first measured 30 Oct 2026
Day 13 since launch. Next receipt: day 30, 29 Nov 2026. A change here is a reading, not a claim about its cause; lots of things move these figures. Anything we do not measure is not shown.
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Quick answers
- Which agents work with Sickle?
- Claude Desktop and Claude on the web, Claude Code, Codex, Cursor, OpenClaw, and any other client that can add a remote MCP server over HTTP.
- How is Sickle different from Google's Gmail MCP server?
- Google's Gmail MCP server is free and hosted by Google but requires a Workspace account, program membership, and your own Google Cloud project; it covers only one Gmail account per connection and can only draft emails, not send them. Sickle is a paid service that connects every mailbox you own—Gmail, Outlook, iCloud, Yahoo, Fastmail or any IMAP server—through a single connection, and it can move, archive, and send emails if you permit it.
- Do I need the Mac app to use the MCP connector?
- No. The Mac app is optional and the connector works on any operating system. You add your mailboxes at sickle.app on the web, and any agent you connect sees all of them.
- Can the AI agent send emails on my behalf?
- Yes, if you grant the email_send permission separately. When enabled, Claude and Cursor ask you to approve each email before sending, and the request displays the complete message. If you disable sending, the agent can still save a draft in your Drafts folder for you to send yourself.
- Which agents work?
- Claude Desktop and Claude on the web, Claude Code, Codex, Cursor, OpenClaw — and any other client that can add a remote MCP server over HTTP.
Sickle has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
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