zerosmtp for Cursor
io.github.msgwing/zerosmtp
A free SMTP relay that still takes a username and password, for devices that cannot do OAuth 2.0.
client:Cursor
transport:stdio
runtime:npm
Install zerosmtp in Cursor
~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json
{
"mcpServers": {
"zerosmtp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"zerosmtp-mcp"
]
}
}
}Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs