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better-email-mcp

n24q02m/better-email-mcp

Better MCP server for Email (IMAP/SMTP) with composite tools optimized for AI agents

@n24q02m/better-email-mcp091 files scannedApril 3, 2026

High risk — review carefully before installing

This package can run commands on your computer AND reads your secret tokens. That combination means it could potentially steal your credentials. Only install this if you trust the author and understand why it needs these permissions.

What We Found(39 issues)

Each card explains what was found and what it means in plain English. Click "Technical details" for the full breakdown.

HIGHHIGH-003

Caution. This package runs system commands on your computer. This is like giving someone the keys to your terminal. They could run anything — download files, change settings, or access your private data.

Technical details

Direct process execution functions (exec, spawn) can run arbitrary commands. Combined with user input, this enables remote code execution.

execSync(

scripts/clean-venv.mjs:33

HIGHHIGH-003

Caution. This package runs system commands on your computer. This is like giving someone the keys to your terminal. They could run anything — download files, change settings, or access your private data.

Technical details

Direct process execution functions (exec, spawn) can run arbitrary commands. Combined with user input, this enables remote code execution.

execSync(

scripts/clean-venv.mjs:70

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/auth/per-user-credential-store.test.ts:40

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/auth/per-user-credential-store.test.ts:47

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/auth/per-user-credential-store.test.ts:163

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/auth/per-user-credential-store.test.ts:172

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/auth/per-user-credential-store.test.ts:187

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/auth/per-user-credential-store.ts:49

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/init-server.test.ts:45

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/init-server.test.ts:80

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/init-server.test.ts:193

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/init-server.test.ts:201

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/init-server.test.ts:206

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/init-server.test.ts:216

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/init-server.ts:45

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/init-server.ts:48

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/tools/helpers/config.test.ts:170

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/tools/helpers/config.test.ts:171

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/tools/helpers/config.test.ts:173

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/tools/helpers/config.test.ts:177

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/tools/helpers/config.test.ts:178

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/tools/helpers/config.test.ts:183

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/tools/helpers/config.test.ts:185

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/tools/helpers/config.ts:232

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/transports/credential-store.test.ts:28

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/transports/credential-store.test.ts:36

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/transports/credential-store.test.ts:100

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/transports/credential-store.test.ts:107

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/transports/credential-store.test.ts:121

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.CREDENTIAL_SECRET

src/transports/credential-store.ts:24

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/transports/http.test.ts:9

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.DCR_SERVER_SECRET

src/transports/http.test.ts:11

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.DCR_SERVER_SECRET

src/transports/http.test.ts:52

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.DCR_SERVER_SECRET

src/transports/http.test.ts:56

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/transports/http.test.ts:62

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

src/transports/http.test.ts:63

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.DCR_SERVER_SECRET

src/transports/http.ts:54

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

test-live-mcp.mjs:18

HIGHHIGH-005

Caution. This package reads your secret passwords and API tokens from your system. If it also has network access, your credentials could be sent to someone else's server. Check WHY it needs your secrets.

Technical details

Reading sensitive environment variables (tokens, secrets, keys, passwords) suggests data exfiltration. MCP servers should declare required env vars, not silently read secrets.

process.env.EMAIL_CREDENTIALS

test-live-mcp.mjs:30

Finding Summary

0

Critical

39

High

0

Medium

0

Low

0

Info