Content
# zoho-mail-mcp
A [Model Context Protocol](https://modelcontextprotocol.io) server for Zoho Mail. Lets Claude (or any MCP client) read, search, and send email from a Zoho Mail account without browser automation.
No equivalent exists in the official MCP registry — this fills that gap.
## Tools
| Tool | Description |
|------|-------------|
| `list_inbox` | List recent inbox messages — returns sender, subject, date, messageId, folderId |
| `search_emails` | Search by keyword, sender email, or subject fragment |
| `read_email` | Read full email body given a messageId and folderId |
| `send_email` | Send an email from your configured sender address |
## Prerequisites
- A [Zoho Mail](https://mail.zoho.com) account
- Node.js 18+
## Setup
### 1. Create a Zoho OAuth app
1. Go to [Zoho API Console](https://api-console.zoho.com/)
2. Create a **Self Client** application
3. Under **Generate Code**, add these scopes:
```
ZohoMail.messages.READ,ZohoMail.messages.CREATE,ZohoMail.folders.READ,ZohoMail.accounts.READ
```
4. Set expiry to **10 minutes**, add a description, click **Create**
5. Copy the generated `client_id`, `client_secret`, and grant `code`
### 2. Exchange the grant code for a refresh token
Run immediately (grant code expires in 10 minutes):
```bash
curl -X POST https://accounts.zoho.com/oauth/v2/token \
-d "grant_type=authorization_code" \
-d "client_id=YOUR_CLIENT_ID" \
-d "client_secret=YOUR_CLIENT_SECRET" \
-d "code=YOUR_GRANT_CODE"
```
Save the `refresh_token` from the response — it doesn't expire.
### 3. Get your account ID
```bash
curl -X GET https://mail.zoho.com/api/accounts \
-H "Authorization: Zoho-oauthtoken YOUR_ACCESS_TOKEN"
```
Use the `accountId` value from the first object in `data[]`.
### 4. Install
```bash
git clone https://github.com/SirGreed808/zoho-mail-mcp
cd zoho-mail-mcp
npm install
```
### 5. Add to Claude Code
```bash
claude mcp add --scope user \
-e "ZOHO_CLIENT_ID=..." \
-e "ZOHO_CLIENT_SECRET=..." \
-e "ZOHO_REFRESH_TOKEN=..." \
-e "ZOHO_ACCOUNT_ID=..." \
-e "ZOHO_SENDER=you@yourdomain.com" \
zoho-mail -- node /absolute/path/to/zoho-mail-mcp/index.js
```
`ZOHO_SENDER` must be a verified address or alias on the account.
## Environment Variables
| Variable | Description |
|----------|-------------|
| `ZOHO_CLIENT_ID` | OAuth app client ID |
| `ZOHO_CLIENT_SECRET` | OAuth app client secret |
| `ZOHO_REFRESH_TOKEN` | Long-lived refresh token (from step 2) |
| `ZOHO_ACCOUNT_ID` | Zoho Mail account ID (from step 3) |
| `ZOHO_SENDER` | Email address to send from |
## Notes
- Access tokens are refreshed automatically — no manual intervention needed
- `read_email` requires both `messageId` and `folderId`, both returned by `list_inbox` and `search_emails`
- Only REST API — no IMAP/SMTP
## License
MIT
