Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@Unosend MCP ServerSend an email to john@example.com about our meeting tomorrow at 10am"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
Unosend MCP Server
Send emails from AI assistants using the Unosend API. Works with Claude Desktop, Cursor, and other MCP clients.
Features
✉️ Send plain text and HTML emails
📅 Schedule emails for future delivery
👥 Add CC and BCC recipients
↩️ Configure reply-to addresses
🔒 Customizable sender email (requires verified domain)
Installation
Setup
1. Get your API Key
Go to Unosend Dashboard
Create a new API key
Copy the key (starts with
un_)
2. Verify your domain
To send emails from your own domain, verify it first.
Configuration
Cursor
Open Cursor Settings → MCP → Add new global MCP server:
Claude Desktop
Open Claude Desktop settings → Developer → Edit Config:
Arguments
Argument | Environment Variable | Description |
|
| Your Unosend API key (required) |
|
| Default sender email (optional) |
|
| Default reply-to email (optional) |
Usage
Once configured, you can ask Claude or Cursor to send emails:
"Send an email to john@example.com with the subject 'Meeting Tomorrow' and let him know we're meeting at 3pm"
"Email the team a summary of today's work"
"Schedule an email to be sent tomorrow at 9am reminding me about the deadline"
Available Tools
Email Tools
Tool | Description |
| Send an email with HTML/text, CC/BCC, scheduling |
| Get details and status of a sent email |
| List recent emails from your account |
| Cancel a scheduled email |
SMS Tools
Tool | Description |
| Send an SMS message ($0.0075/segment) |
| Get details of an SMS message |
Validation Tools
Tool | Description |
| Validate an email address ($0.01/validation) |
Domain Tools
Tool | Description |
| List all verified domains |
| Get domain details and DNS records |
Audience & Contact Tools
Tool | Description |
| List all audiences (contact lists) |
| Add a contact to an audience |
| List contacts in an audience |
Utility Tools
Tool | Description |
| Verify API connectivity and key validity |
send_email Parameters
Parameter | Required | Description |
| Yes | Recipient email(s), comma-separated |
| Yes | Email subject |
| No | HTML content |
| No | Plain text content |
| No | Sender email (uses default if not provided) |
| No | CC recipients |
| No | BCC recipients |
| No | Reply-to address |
| No | ISO 8601 datetime for scheduling |
Example
Create an email.md file:
Then tell your AI: "Send this as an email"
License
MIT