MCP server

mailfloss Official

com.mailfloss/mailfloss

Checked 26 Oct 2026, 08:29 UTC · It answered and asked for a sign-in

Email verification for AI agents: verify addresses and lists, check credits, manage integrations.

Signs in with your accountVerified publisher: mailfloss.com

https://api.mailfloss.com/mcp

At a glance

Type: MCP server
Publisher: mailfloss.com (verified by the MCP Registry)
Status: Signs in with your account
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http mailfloss https://api.mailfloss.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.mailfloss]
url = "https://api.mailfloss.com/mcp"

Gemini CLI

{"mcpServers":{"mailfloss":{"httpUrl":"https://api.mailfloss.com/mcp"}}}

Cursor

{"mcpServers":{"mailfloss":{"url":"https://api.mailfloss.com/mcp"}}}

VS Code

{"servers":{"mailfloss":{"type":"http","url":"https://api.mailfloss.com/mcp"}}}

Antigravity

agy mcp add mailfloss https://api.mailfloss.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"mailfloss","server_url":"https://api.mailfloss.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"mailfloss","server_url":"https://api.mailfloss.com/mcp"}

Signs in with your account: your agent app opens a sign-in page the first time you use it.

Qualisend Email Verification
Verify email addresses and clean lists to improve deliverability and sender reputation.
Formquote
Published prices and licence fit for email verification, sound effect packs and font licences.
BillionVerify
Email verification for AI agents: verify single or bulk emails, check credits and history.
MailTester Email Verification
Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.
Emailable MCP by usefulapi
Verify email addresses with Emailable one by one or in batches, and read credits and batch results.
Verifai — Email Verification & Domain Intelligence
Email verification and domain intelligence for AI agents. MX, RDAP, SSL checks. 25 free credits.
DeriveAI x402 APIs
25 pay-per-request intelligence APIs for AI agents via x402 micropayments (USDC/Base)
Blackwood State
Pay-per-call tools for agents: onchain data, ECB FX rates, text tools. USDC on Base, x402

[![AptLynx](https://aptlynx.net/badge/com.mailfloss/mailfloss.svg)](https://aptlynx.net/servers/com.mailfloss/mailfloss)

Listing text is written by the maker; AptLynx lists tools and does not vouch for them. Find another tool · Browse by topic · For agents