Gmail MCP vs Thunderbird Cli
A side-by-side look at the Gmail MCP and Thunderbird Cli MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Gmail MCP for communication work as a local process; choose Thunderbird Cli for communication as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Gmail MCP when
- You need dedicated capabilities in the Communication domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
GOOGLE_GMAIL_CLIENT_ID, GOOGLE_GMAIL_CLIENT_SECRET, GOOGLE_GMAIL_REFRESH_TOKEN.
Choose Thunderbird Cli when
- You need dedicated capabilities in the Communication domain.
- You prefer a local stdio subprocess transport.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Communication | Communication |
| Quality signal | 44/100 · Fair | 47/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | GOOGLE_GMAIL_CLIENT_IDGOOGLE_GMAIL_CLIENT_SECRETGOOGLE_GMAIL_REFRESH_TOKEN |
Tools & capabilities
Gmail MCP tools
No tool names declared yet. Check the project README from the listing page.
Thunderbird Cli tools
No tool names declared yet. Check the project README from the listing page.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Gmail MCP
{
"mcpServers": {
"gmail-mcp": {
"command": "npx",
"args": [
"-y",
"mcp-google-gmail@latest"
],
"env": {
"GOOGLE_GMAIL_CLIENT_ID": "YOUR_GOOGLE_GMAIL_CLIENT_ID_HERE",
"GOOGLE_GMAIL_CLIENT_SECRET": "YOUR_GOOGLE_GMAIL_CLIENT_SECRET_HERE",
"GOOGLE_GMAIL_REFRESH_TOKEN": "YOUR_GOOGLE_GMAIL_REFRESH_TOKEN_HERE"
}
}
}
}
Thunderbird Cli
{
"mcpServers": {
"thunderbird-cli": {
"command": "npx",
"args": [
"-y",
"thunderbird-cli-mcp"
]
}
}
}
Frequently asked questions
Gmail MCP is categorized under Communication and uses a local stdio subprocess. Thunderbird Cli belongs to Communication and uses a local stdio subprocess. Pick Gmail MCP for communication work and Thunderbird Cli for communication.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Gmail MCP has no declared pricing — check the project's own site. Thunderbird Cli has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add gmail-mcp and thunderbird-cli as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Gmail MCP has a quality signal of 44/100 (Fair) with 1 views, 0 installs and 0 GitHub stars. Thunderbird Cli has 47/100 (Fair) with 1 views, 0 installs and 57 GitHub stars.