dev.mailverdict由 mailverdict.dev 发布官方发布者v0.1.1更新于 Oct 28, 2026
Keyless email checks: disposable, role, and free-provider detection, MX, and typo suggestions.
无需密钥的远程 MCP 服务器，让助手检查邮箱地址和域名的临时邮箱、角色账号、免费邮箱、MX 记录与拼写建议。
Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。
把这段提示词粘贴到 Claude Code、Codex、Cursor 等智能体，或 SourceWeft 对话中。智能体会读取该服务器的安装指南，先向你展示发布者、端点和登录方式，经你同意后再把它添加到你的客户端。密钥不会写进任何命令。
阅读 https://sourceweft.com/mcp/dev.mailverdict%2Fmailverdict/install.md，并按其中说明把这个 MCP 服务器接入我的客户端。修改任何配置之前，先告诉我它的发布者、端点和登录方式，等我确认。不要把 API 密钥写进命令或我会提交的文件；问我密钥应从哪里获取。把它添加到你客户端的 mcpServers 配置中。
{
"mcpServers": {
"mailverdict": {
"type": "http",
"url": "https://api.mailverdict.dev/mcp"
}
}
}Email intelligence API: disposable/burner detection, role-account detection, free-provider classification, MX validation, and typo suggestions. Keyless and free at the entry tier, built to be the email-check dependency that coding agents reach for when they scaffold a signup flow.
API: https://api.mailverdict.dev · npm: mailverdict ·
Freshness feed ("Burner Feed"): GET /v1/changes
Every SaaS signup form needs the same three answers — is this a burner? is
this a person or a mailbox like info@? did they typo their domain? — and the
current options are stale GitHub lists you have to vendor yourself or paid
validators gated behind signup. The value here is not the code (it's small on
purpose): it's the maintained dataset — burner domains churn daily, and this
repo rebuilds its dataset from every maintained public source on a daily
schedule, plus its own discovery over time.
Requires Node >= 20.
Response follows the Kickbox/Emailable industry convention (
result,reason, bare booleans,did_you_mean= full corrected address,score0–100) so code written against those APIs ports with near-zero edits.
Endpoints: GET /v1/check?email= · GET /v1/check/{email} ·
POST /v1/check (batch ≤100) · GET /v1/domain/{domain} ·
GET /v1/changes?since=24h (freshness feed) · GET /v1/meta ·
/llms.txt · /openapi.yaml. Add mx=false to skip the DNS lookup.
Privacy-conscious default: if you only need burner/typo screening, check
the domain (/v1/domain/{domain}) — no email address leaves your system.
Use the full email check when you need role detection or normalization.
sdk/ packages the integration story: call the live API, fall back to a
bundled offline snapshot on timeout/failure — fresher than a vendored static
list, but never a hard runtime dependency in your signup path.
Published on npm as mailverdict;
see sdk/README.md.
Hosted, keyless remote server — point any MCP client at:
Stateless Streamable HTTP (JSON-RPC 2.0), no signup or key. Tools:
check_email, check_domain.
A stdio server also ships for local use:
Register the local one in Claude Code:
claude mcp add mailverdict -- npx tsx src/mcp.ts (run from this directory).
DNS is done over DoH (cloudflare-dns.com) so the same code runs on Node and
edge runtimes. Subdomains match their parents (foo.mailinator.com →
mailinator.com).
The dataset aggregates these excellent permissively-licensed community lists —
see data/meta.json for per-source counts, status, and license on every build
(unlicensed and GPL lists are deliberately excluded):
allowlist.conf 2026-04)pipeline/roles.tsMerge precedence (important — the free-provider list contains temp-mail
domains and typo-squats like mailinator.com and gmial.com):
allowlists rescue from disposable, then disposable wins over free.
mailverdict is built agent-first: the first call works with zero signup, the
docs are operable by coding agents (/llms.txt, OpenAPI), and the dataset's
freshness is provable via the Burner Feed rather than claimed.
result, reason, did_you_mean, bare booleans)llms.txt (agent-operable: endpoint-first, curl-able), OpenAPI spec/mcp/v1/changes feed (clean-build diffs only; 90-day retention)mailverdict)api.mailverdict.dev)dev.mailverdict/mailverdict)before-create hook).refine(), React Hook Form, server actions)v0.1.1 — live at https://api.mailverdict.dev (Cloudflare Workers), with a
hosted keyless remote MCP server at /mcp and an official MCP registry
listing. The dataset refreshes and redeploys daily via GitHub Actions, and the
mailverdict SDK is published on npm. 41 tests cover the core logic, HTTP
layer, MCP handler, and SDK live/fallback paths.
The hosted API is free with per-IP rate limits. Need higher throughput, an SLA, or commercial terms? Email [email protected].
MIT — see LICENSE; it covers the code and dataset pipeline. The
hosted service at api.mailverdict.dev is provided "as is", without warranty
of any kind. The aggregated dataset sources carry their own permissive
licenses, recorded per-source in data/meta.json.
来源：README.md，提交 d79c2b4
Check an email address: syntax, disposable/burner domain, role account, free provider, typo suggestion, MX records. Returns result (deliverable|undeliverable|risky|unknown), reason, score 0-100, and per-signal booleans.
mxemail必填Check a domain: disposable/burner list membership, free-provider status, typo suggestion, MX records.
mxdomain必填已满足适用检查项的 100%
该评分衡量此收录条目的完整程度，依据注册中心条目、端点与公开来源计算得出。它不是对服务器本身的评价，也不表示服务器安全或当前可用：可连通性是带日期的检查结果，评分也不包含安装量或用户评价。
npm installnpm run build:data # fetch + merge upstream lists into data/dataset.jsonnpm testnpm run dev # http://localhost:8787curl "localhost:8787/v1/[email protected]"{ "email": "[email protected]", "user": "jane", "domain": "mailinator.com", "tag": null, "normalized_email": "[email protected]", "result": "risky", "reason": "disposable_email", "score": 5, "valid_syntax": true, "disposable": true, "disposable_match": "mailinator.com", "role": false, "free": false, "mx_found": true, "mx_records": ["mail2.mailinator.com"], "did_you_mean": null, "accept_all": null}import { createClient } from 'mailverdict'const check = await createClient().checkEmail(input)if (check.disposable) reject() // check.source: 'live' | 'snapshot'POST https://api.mailverdict.dev/mcpnpm run mcp # stdio transport; tools: check_email, check_domainpipeline/build.ts daily: fetch upstream lists -> merge/dedupe -> apply allowlist -> data/dataset.json + data/meta.jsonsrc/lib/* pure logic: parse, classify, suggest, MX-over-DoHsrc/app.ts Hono app (runtime-agnostic)src/server.ts Node entry (self-hosting)src/worker.ts Cloudflare Workers entry (production: api.mailverdict.dev)src/mcp.ts MCP stdio server for coding agents.github/workflows/ daily dataset refresh + auto-commit