Governed email for AI agents over MCP — sandbox inboxes, server-side policy gate, tamper-evident audit. Registry: com.mailbuttons/mcp-server
Setup
Choose your client, copy the config, then fill in any required environment variables.
Local
claude mcp add mailbuttons-mbag-ai --env MAILBUTTONS_API_KEY='<MAILBUTTONS_API_KEY>' -- npx -y @mailbuttons/mcp-server~/.codex/config.toml
[mcp_servers.mailbuttons-mbag-ai]
command = "npx"
args = ["-y", "@mailbuttons/mcp-server"]
env = { MAILBUTTONS_API_KEY = "<MAILBUTTONS_API_KEY>" }
# codex mcp add mailbuttons-mbag-ai --env MAILBUTTONS_API_KEY='<MAILBUTTONS_API_KEY>' -- npx -y @mailbuttons/mcp-server~/.cursor/mcp.json
{
"mcpServers": {
"mailbuttons-mbag-ai": {
"command": "npx",
"args": [
"-y",
"@mailbuttons/mcp-server"
],
"env": {
"MAILBUTTONS_API_KEY": "<MAILBUTTONS_API_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"mailbuttons-mbag-ai": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@mailbuttons/mcp-server"
],
"env": {
"MAILBUTTONS_API_KEY": "<MAILBUTTONS_API_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"mailbuttons-mbag-ai": {
"command": "npx",
"args": [
"-y",
"@mailbuttons/mcp-server"
],
"env": {
"MAILBUTTONS_API_KEY": "<MAILBUTTONS_API_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"mailbuttons-mbag-ai": {
"command": "npx",
"args": [
"-y",
"@mailbuttons/mcp-server"
],
"env": {
"MAILBUTTONS_API_KEY": "<MAILBUTTONS_API_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"mailbuttons-mbag-ai": {
"command": "npx",
"args": [
"-y",
"@mailbuttons/mcp-server"
],
"env": {
"MAILBUTTONS_API_KEY": "<MAILBUTTONS_API_KEY>"
}
}
}
}Remote
claude mcp add --transport http mailbuttons-mbag-ai https://mailbuttons.com/api/v1/mcp/rpc --header 'Authorization: <AUTHORIZATION>'~/.codex/config.toml
[mcp_servers.mailbuttons-mbag-ai]
url = "https://mailbuttons.com/api/v1/mcp/rpc"
http_headers = { Authorization = "<AUTHORIZATION>" }
# codex mcp add mailbuttons-mbag-ai --url https://mailbuttons.com/api/v1/mcp/rpc~/.cursor/mcp.json
{
"mcpServers": {
"mailbuttons-mbag-ai": {
"url": "https://mailbuttons.com/api/v1/mcp/rpc",
"headers": {
"Authorization": "<AUTHORIZATION>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"mailbuttons-mbag-ai": {
"type": "http",
"url": "https://mailbuttons.com/api/v1/mcp/rpc",
"headers": {
"Authorization": "<AUTHORIZATION>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"mailbuttons-mbag-ai": {
"httpUrl": "https://mailbuttons.com/api/v1/mcp/rpc",
"headers": {
"Authorization": "<AUTHORIZATION>"
}
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"mailbuttons-mbag-ai": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://mailbuttons.com/api/v1/mcp/rpc",
"--header",
"Authorization:<AUTHORIZATION>"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"mailbuttons-mbag-ai": {
"url": "https://mailbuttons.com/api/v1/mcp/rpc",
"headers": {
"Authorization": "<AUTHORIZATION>"
}
}
}
}Environment variables
MAILBUTTONS_API_KEY
Replace the placeholders with your own credentials and keep them out of version control.