Source: https://cli.nylas.com/guides/manus-vs-claude-code-email

Guide

# Manus AI vs Claude Code for Email Automation

Both Manus and Claude Code can automate email and calendar tasks using the Nylas CLI. They differ in how they connect: Manus uses Skills, Claude Code uses MCP. This guide compares setup, features, cost, and privacy so you can pick the right agent runtime. Works across all major email providers.

Written by [Hazik](https://cli.nylas.com/authors/hazik) • Director of Product Management

Reviewed by [Hazik](https://cli.nylas.com/authors/hazik)

Updated April 11, 2026

Verified

 —

CLI

3.1.1

 ·

Gmail, Outlook

 ·

last tested

April 11, 2026

> **TL;DR:** Manus and Claude Code both use the same Nylas CLI commands under the hood. Manus connects via Skills (a `SKILL.md` file), Claude Code connects via MCP (`nylas mcp serve`). Choose Manus for sandboxed, no-setup execution. Choose Claude Code for local, developer-first workflows.

## Two agents, same CLI

[Manus](https://manus.im/) is an AI agent platform that runs tasks in a sandboxed environment. [Claude Code](https://docs.anthropic.com/en/docs/claude-code) is Anthropic's CLI-based coding agent that runs locally on your machine.

Both can send emails, read inboxes, search threads, create calendar events, and check availability using the Nylas CLI. The underlying commands are identical — `nylas email send`, `nylas email list`, `nylas calendar events create`, and so on. What differs is the integration method:

- **Manus** uses [Skills](https://cli.nylas.com/guides/manus-ai-skills) — a `SKILL.md` file that teaches the agent which CLI commands to run and when
- **Claude Code** uses [MCP](https://cli.nylas.com/guides/ai-agent-email-mcp) — the Model Context Protocol, where `nylas mcp serve` exposes CLI tools as a standardized server

## Setup comparison

Manus requires uploading a Skill folder. Claude Code requires adding an MCP server config.

### Manus: upload a Skill

Create a folder with a `SKILL.md` file and a setup script, then upload it to Manus:

```yaml
# SKILL.md frontmatter
---
name: nylas-email
description: >
  Read, send, and search email using the Nylas CLI.
  Activate when the user asks about email, inbox, or calendar.
metadata:
  author: nylas
  version: "1.0"
---

## Setup
Run `bash scripts/setup.sh` to install the Nylas CLI.

## Commands
- `nylas email list --limit 10 --json` — list recent messages
- `nylas email send --to user@example.com --subject "Hello" --body "Hi" --yes`
- `nylas calendar list --json` — list upcoming events
```

### Claude Code: add MCP config

Run the install command or add the server config manually:

```bash
nylas mcp install --assistant claude-code
```

Or add the server config manually to `.mcp.json`:

```json
{
  "mcpServers": {
    "nylas": {
      "command": "nylas",
      "args": ["mcp", "serve"]
    }
  }
}
```

## Feature comparison

| Feature | Manus (Skills) | Claude Code (MCP) |
| --- | --- | --- |
| Integration method | SKILL.md file | MCP server |
| Setup time | ~5 min (upload folder) | ~2 min (one command) |
| Provider support | All via Nylas | All via Nylas |
| Execution environment | Sandboxed VM | Local machine |
| Background tasks | Yes | No |
| Cost model | Credits (free tier available) | API tokens (pay per use) |
| Privacy | Runs in Manus sandbox | Runs on your machine |
| Calendar support | Yes | Yes |
| Email compose | Yes (smart-compose) | Yes (smart-compose) |

## When to use Manus

- **Background tasks** — Manus can run multi-step workflows in the background without keeping a terminal open
- **Non-technical users** — no local CLI install needed, everything runs in the Manus sandbox
- **Sandboxed execution** — commands run in an isolated VM, not on your machine
- **No local setup** — Manus installs the CLI in its own environment automatically

## When to use Claude Code

- **Developers** — Claude Code is designed for coding workflows where email/calendar is one piece of a larger task
- **Local execution** — commands run on your machine with your credentials, no data leaves your environment
- **MCP ecosystem** — combine Nylas with other MCP servers (databases, APIs, file systems) in one agent session
- **Code-heavy workflows** — write scripts that use CLI output, pipe data between tools, automate complex sequences

## Manus Skill example

After uploading the Skill, activate it with the `/` slash command in Manus:

```bash
# In Manus chat
/nylas-email

# Then prompt naturally:
"Summarize my last 5 emails and draft a reply to the one from Alice"
```

Manus reads the SKILL.md, runs the setup script if needed, then executes the appropriate `nylas email` commands in its sandbox.

## Claude Code MCP example

After installing the MCP server, Claude Code discovers Nylas tools automatically:

```bash
# In Claude Code terminal
claude

# Then prompt naturally:
"Read my inbox, find emails from Alice, and draft a reply summarizing the thread"
```

Claude Code calls the Nylas MCP tools directly — no manual CLI commands needed. The MCP server translates tool calls into `nylas email` and `nylas calendar` commands behind the scenes.

## Next steps

- [Set up the Manus Skill](https://cli.nylas.com/guides/manus-ai-skills) — full walkthrough with SKILL.md, scripts, and troubleshooting
- [Set up Claude Code MCP](https://cli.nylas.com/guides/ai-agent-email-mcp) — install the MCP server for Claude Code, Cursor, or VS Code
- [Command reference](https://cli.nylas.com/docs/commands) — browse all Nylas CLI commands available to both agents