Send email, look up public IP information, and convert files to Markdown through SendSoon.
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io.github.sendsoon/mcp is an MCP server that send email, look up public IP information, and convert files to Markdown through SendSoon. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 85/100 on MCPpedia's security, maintenance and efficiency rubric.
Config is the same across clients - only the file and path differ.
{
"mcpServers": {
"sendsoon": {
"env": {
"SENDSOON_API_KEY": ""
},
"args": [
"-y",
"@sendsoon/mcp"
],
"command": "npx"
}
}
}Are you the author?
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Send email, look up public IP information, and convert files to Markdown through SendSoon.
This server supports HTTP transport. Be the first to test it - help the community know if it works.
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No known CVEs.
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SendSoon MCP is a Model Context Protocol (MCP) server that lets Codex, Claude, and WorkBuddy use SendSoon capabilities: send email, look up public IPs, and convert local documents to Markdown.
Configure it once, then describe tasks in natural language. You usually do not need to mention SendSoon in every prompt.
| Tool | Purpose | Example |
|---|---|---|
send_email | Send a single email | “Send me a test email” |
ip_lookup | Look up public IP information | “Look up the location of 8.8.8.8” |
markitdown_convert | Convert a local document to Markdown | “Convert this PDF to Markdown” |
Send an email to user@example.com with the subject “Meeting reminder” and the body “The meeting starts at 3 PM today.”
Look up the location and ISP for 8.8.8.8.
Convert /path/to/report.pdf to Markdown and summarize the key points.
If the agent does not select a tool automatically, say:
Use the sendsoon MCP to complete this task.
The instructions below cover Codex, Claude Desktop, and WorkBuddy.
Config file: user-level ~/.codex/config.toml (macOS / Linux) or %USERPROFILE%\.codex\config.toml (Windows).
[mcp_servers.sendsoon]
command = "npx"
args = ["-y", "@sendsoon/mcp"]
[mcp_servers.sendsoon.env]
SENDSOON_API_KEY = ""
Verify: Save the file, restart Codex, and run /mcp in a chat. You should see sendsoon connected. In the desktop app, also check Settings > MCP servers.
First use: Start a new conversation and ask for a simple task (e.g. “Look up 8.8.8.8”). Approve the tool if Codex asks for permission.
Config file:
| OS | Path |
|---|---|
| macOS | ~/Library/Application Support/Claude/claude_desktop_config.json |
| Windows | %APPDATA%\Claude\claude_desktop_config.json |
You can also open Settings > Developer > Edit Config inside Claude Desktop.
{
"mcpServers": {
"sendsoon": {
"command": "npx",
"args": ["-y", "@sendsoon/mcp"],
"env": {
"SENDSOON_API_KEY": ""
}
}
}
}
Verify: Save the file, fully quit Claude Desktop (including the system tray), then relaunch. Start a new chat and confirm sendsoon tools appear in the tools menu or settings.
First use: Claude may ask to approve tool access on the first invocation; allow it to continue.
WorkBuddy can add SendSoon by pasting the connector JSON directly in MCP Server Management.
Config file: %USERPROFILE%\.workbuddy-ai\mcp.json (Windows) or ~/.workbuddy-ai/mcp.json (macOS / Linux).
SENDSOON_API_KEY if you have a Key; leave it empty for the anonymous trial.{
"mcpServers": {
"sendsoon": {
"command": "npx",
"args": [
"-y",
"@sendsoon/mcp"
],
"env": {
"SENDSOON_API_KEY": ""
}
}
}
}

The screenshot shows the WorkBuddy connector editor: the configuration file path is at the top, and the sendsoon JSON is pasted into the editor. After saving, return to the MCP list and confirm sendsoon is connected.
Verify: Start a new conversation and ask for a simple task (e.g. “Look up 8.8.8.8”). Approve the tool if WorkBuddy asks for permission.
Optional environment variable:
| Setting | Required | What to enter |
|---|---|---|
SENDSOON_API_KEY | No | Leave empty for an unregistered trial. One public IP can send up to three free test emails per day. Enter your ge |