Sickle
Native macOS mail client that puts Gmail, Outlook, iCloud, Fastmail and any IMAP account in one window with a colour per mailbox and an email cleaner, plus a hosted connector (MCP server) so Claude and other AI agents can search, read and work across every mailbox you add, from any OS. 7-day free trial, then $8.99/month or $30/year including the connector.
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Use cases
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About Sickle
Sickle is listed in our productivity category and is aimed at people who want a ready-to-use product. Native macOS mail client that puts Gmail, Outlook, iCloud, Fastmail and any IMAP account in one window with a colour per mailbox and an email cleaner, plus a hosted connector (MCP server) so Claude and other AI agents can search, read and work across every mailbox you add, from any OS. 7-day free trial, then $8.99/month or $30/year including the connector. Pricing, as the maker states it: Paid. Maturity: Active. We last checked the official link on 2026-10-30.
Sickle at a glance
- Category: Productivity
- Built for: People and teams who want a ready-to-use AI product
- Pricing: Paid (as the maker states it)
- Official site: sickle.app
- Listed on AgentScout: Oct 30, 2026
Sickle FAQ
What is Sickle?
Native macOS mail client that puts Gmail, Outlook, iCloud, Fastmail and any IMAP account in one window with a colour per mailbox and an email cleaner, plus a hosted connector (MCP server) so Claude and other AI agents can search, read and work across every mailbox you add, from any OS. 7-day free trial, then $8.99/month or $30/year including the connector.
How much does Sickle cost?
Sickle's pricing, as the maker states it: Paid. Check the official site for current plans.
What are alternatives to Sickle?
Similar tools include draw.io MCP, Agente Smart Documents, Novastart, ExcaliClaw, Cumora and OpenKnowledge.
Facts from our link-checked listing and the official site. See something wrong? Suggest an edit.
Sickle ratings and reviews
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Sickle alternatives
Other productivity tools in our directory. See all productivity tools →
draw.io MCP
The official draw.io MCP server, so Claude, ChatGPT, Cursor and other assistants can create and edit flowcharts, architecture diagrams and other draw.io diagrams right in the chat. Free and needs no sign-in.
Agente Smart Documents
Agente Smart Documents turns a finished Word document into a reusable template your AI agent can fill. You upload an example, it builds the template, then ChatGPT or Codex, Claude, Grok Bot, Hermes or the web workspace asks only for the details that are missing and hands back a filled .docx with the original layout kept, for you to review before sending. A few documents are free each month, then a flat monthly fee per office.
Novastart
Novastart is an infinite-canvas operating system where your apps, AI agents and teammates work together on one shared whiteboard space; Free, Pro $10 and Team $20 per user.
ExcaliClaw
Hand-drawn diagram workspace your agent can draw in via MCP (Claude, Cursor, VS Code).
Cumora
Cumora is a team chat app where AI agents are members of the workspace rather than a chat box you prompt. Each agent gets a persona, its own private memory and files, a status, and a schedule on which it wakes up, reads the room and decides whether to message someone, post an idea or pull a small group together. Agents can message each other, and you can read those side conversations. People join by email or link, agents can be grouped into teams and given projects, and the same live workspace runs on desktop, in the browser and on a phone. It is free during an invite-only preview.
OpenKnowledge
OpenKnowledge is a free, local-first markdown editor and knowledge base built for working alongside AI agents. It looks and feels like a Notion-style WYSIWYG editor, with callouts, tabs, Mermaid diagrams and media blocks, but every page stays a plain markdown file on your disk. Coding agents such as Claude Code, Codex, Cursor, Gemini CLI and dozens of others can read and write the same files through its integrations, so specs, team wikis and LLM wikis stay in one place that both people and agents keep up to date. It ships as a desktop app plus a web UI and CLI.
Related lists
🏆 Ranked in: MCP servers that work with Claude Code
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