Email DNS Preflight x402 vs Deliveriq MCP
A side-by-side look at the Email DNS Preflight x402 and Deliveriq MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
E
Email DNS Preflight x402CommunicationPaid email, DNS, mail-security and RDAP intelligence for agents over x402.37FairAuth: not declaredVerdict: choose Email DNS Preflight x402 for communication work; choose Deliveriq MCP for communication as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
EChoose Email DNS Preflight x402 when
- You need dedicated capabilities in the Communication domain.
Choose Deliveriq MCP when
- You need dedicated capabilities in the Communication domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
DELIVERIQ_API_KEY.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | E Email DNS Preflight x402 | |
|---|---|---|
| Category | Communication | Communication |
| Quality signal | 37/100 · Fair | 41/100 · Fair |
| Install command | Not confirmed yet | Confirmed |
| Transport | — | Local subprocess (stdio) |
| Auth | Not declared | API key required |
| Pricing | Paid service | Freemium |
| Required env vars | None listed | DELIVERIQ_API_KEY |
| Verified owner | Community listing | Community listing |
| GitHub stars | — | 1 |
| Directory activity | 0 views 0 installs 0 upvotes | 2 views 0 installs 0 upvotes |
| Tools | Not listed | Not listed |
| Full listing | View Email DNS Preflight x402 | View Deliveriq MCP |
Tools & capabilities
Email DNS Preflight x402 tools
No tool names declared yet. Check the project README from the listing page.
Deliveriq MCP 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.
Email DNS Preflight x402
No confirmed install command for Email DNS Preflight x402 yet — follow the setup steps linked from its listing page rather than a guessed package name.
Deliveriq MCP
{
"mcpServers": {
"deliveriq-mcp": {
"command": "npx",
"args": [
"-y",
"@deliveriq/mcp"
],
"env": {
"DELIVERIQ_API_KEY": "YOUR_DELIVERIQ_API_KEY_HERE"
}
}
}
}
Frequently asked questions
Email DNS Preflight x402 is categorized under Communication and uses an install path we have not confirmed yet. Deliveriq MCP belongs to Communication and uses a local stdio subprocess. Pick Email DNS Preflight x402 for communication work and Deliveriq MCP 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. Email DNS Preflight x402 has no confirmed install command yet — follow its own setup instructions.
Email DNS Preflight x402 is listed as a paid service. Deliveriq MCP is listed as freemium — a free tier with paid plans. Auth: api key required. 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 email-dns-preflight-x402 and deliveriq-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Email DNS Preflight x402 has a quality signal of 37/100 (Fair) with 0 views, 0 installs and 0 GitHub stars. Deliveriq MCP has 41/100 (Fair) with 2 views, 0 installs and 1 GitHub stars.