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io.github.msgwing/zerosmtp
zerosmtp-mcp
A free SMTP relay that still takes a username and password, for devices that cannot do OAuth 2.0.
No known CVEs
MIT license
Actively maintained
Last commit 0d ago
Works with most clients
Transport: stdio, sse
0 tools
Grade F
MCPpedia last refreshed this data
io.github.msgwing/zerosmtp is an MCP server that a free SMTP relay that still takes a username and password, for devices that cannot do OAuth 2.0. Its tool list has not been published yet over stdio and sse, requires no API key, and scores 61/100 on MCPpedia's security, maintenance and efficiency rubric.
Step 1
Install in your client
Config is the same across clients - only the file and path differ.
CD
Supported in Claude Desktopstdio, sse · Node 18+
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"io-github-msgwing-zerosmtp": {
"args": [
"-y",
"zerosmtp-mcp"
],
"command": "npx"
}
}
}Are you the author?
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What io.github.msgwing/zerosmtp does
A free SMTP relay that still takes a username and password, for devices that cannot do OAuth 2.0.
Test This Server
Run this in your terminal to verify the server starts. Then let us know if it worked - your result helps other developers.
npx -y 'zerosmtp-mcp' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
Scored, not listed
Why this score
Five weighted categories - click any category to see the underlying evidence.
Score breakdown
61/100across 5 weighted dimensions
0255075100
23
14
14
10
−39
Security
Maintenance
Efficiency
Documentation
Compatibility
Categoriesclick a row to see evidence
Security
OSV.devNo known CVEs.
Checked zerosmtp-mcp against OSV.dev.
Community
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Frequently Asked Questions
- Is io.github.msgwing/zerosmtp safe to use?
- io.github.msgwing/zerosmtp has no known CVEs as of the latest MCPpedia security scan. Authentication requirements were not detected automatically - check the project's documentation before connecting in a shared environment. Licensed under MIT.
- How do I install io.github.msgwing/zerosmtp?
- io.github.msgwing/zerosmtp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
- What AI clients work with io.github.msgwing/zerosmtp?
- io.github.msgwing/zerosmtp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.
- Is io.github.msgwing/zerosmtp actively maintained?
- io.github.msgwing/zerosmtp is actively maintained - last commit was 0 days ago.
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Community
Discussion
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