Check syntax, MX records, disposable domains, and role-based addresses. Get a lead quality score for every email. Paste a list or verify one by one — 100 free verifications per month. 檢查語法、MX 記錄、一次性域名和角色型地址，為每封 Email 獲取潛客品質評分。貼上清單或逐一驗證 — 每月 100 次免費驗證。
No credit card · No test emails sent · Works instantly 無需信用卡 · 不寄送測試郵件 · 即時生效
Six layers of verification ensure every address in your database is worth mailing to.六層驗證確保資料庫中每個地址都值得寄送郵件。
Full RFC 5322 format check. Catches missing @, invalid characters, malformed domains, and double dots before they waste a send.完整 RFC 5322 格式檢查，在浪費一次寄送前捕捉缺少 @、無效字元、錯誤域名和連續點號等問題。
Queries DNS to confirm a mail server exists for the domain. An email with no MX record will bounce 100% of the time.查詢 DNS 確認域名的郵件伺服器存在。沒有 MX 記錄的 Email 退信率高達 100%。
Blocks temporary inboxes from Mailinator, Guerrilla Mail, Temp Mail, and 3,000+ other throwaway services that pollute your list.封鎖來自 Mailinator、Guerrilla Mail、Temp Mail 及 3,000+ 其他一次性服務的臨時收件匣，防止污染您的名單。
Flags generic inboxes like info@, support@, admin@, sales@, and noreply@ — group addresses that hurt deliverability and open rates.標記通用收件匣如 info@、support@、admin@、sales@ 和 noreply@ — 這類群組地址會損害到達率和開信率。
Each email gets a 0–100 deliverability score. 80+ is safe to send. Below 50 is risky. Prioritize your outreach with confidence.每封 Email 獲得 0–100 到達率評分。80 分以上可安全寄送，50 分以下有風險。自信地優先處理您的外送名單。
Paste up to 100 emails at once — comma, newline, or semicolon separated. Get back a full result table with status and score for each.一次貼上多達 100 個 Email，以逗號、換行或分號分隔，獲得包含每個地址狀態和評分的完整結果表格。
From marketing to sales to product — clean emails mean better results at every step.從行銷到銷售到產品 — 乾淨的 Email 名單在每個環節都意味著更好的結果。
Audit your existing contacts database before a campaign push. Remove invalid and disposable addresses to protect your sender reputation.在行銷活動前審計現有聯絡人資料庫，移除無效和一次性地址以保護寄件者聲譽。
Run your list through verification before hitting send. Reduce bounce rates, avoid spam traps, and keep your ESP account healthy.在點擊發送前驗證您的名單，降低退信率、避免垃圾郵件陷阱，保持 ESP 帳戶健康。
Catch fake and throwaway emails at the point of entry. Ensure every lead in your funnel has a real, deliverable address before it's saved.在入口處攔截假冒和一次性 Email，確保漏斗中每個潛客在儲存前都有真實且可寄達的地址。
Regularly clean your subscriber list to maintain high open rates, low unsubscribes, and compliance with ESP sending policies.定期清理訂閱者名單以維持高開信率、低退訂率，並符合 ESP 寄送政策。
No setup. No integration. Just paste and verify.無需設定。無需整合。貼上即可驗證。
Type a single email address or paste a list of up to 100 addresses, separated by commas, newlines, or semicolons. Sign in with Google to get started for free.輸入單一 Email 地址或貼上多達 100 個地址的清單，以逗號、換行或分號分隔。以 Google 登入即可免費開始。
Our engine runs syntax checks, MX lookups, disposable domain detection, and role-address classification simultaneously — typically in under 3 seconds.我們的引擎同時執行語法檢查、MX 查詢、一次性域名偵測和角色地址分類 — 通常在 3 秒內完成。
View a results table with valid/invalid status, quality score, and specific reason flags for each address. Export the full JSON for your records.查看包含每個地址有效/無效狀態、品質評分和具體原因標記的結果表格。匯出完整 JSON 供存檔使用。
100 free verifications every month. No credit card required.每月 100 次免費驗證。無需信用卡。
No. We verify emails using DNS lookups and MX record checks without sending any test messages to the addresses you submit. Your contacts will never know they were checked, and our system never triggers any spam filters.不會。我們使用 DNS 查詢和 MX 記錄檢查來驗證 Email，不會向您提交的地址寄送任何測試訊息。您的聯絡人永遠不會知道被檢查過，我們的系統也不會觸發任何垃圾郵件過濾器。
Disposable emails are temporary addresses from services like Mailinator, Guerrilla Mail, Temp Mail, and thousands of similar providers. Users create them to sign up for things without giving their real email. Our database covers 3,000+ known disposable domains and is updated regularly.一次性 Email 是來自 Mailinator、Guerrilla Mail、Temp Mail 及數千個類似服務的臨時地址。用戶使用它們註冊服務而不透露真實 Email。我們的資料庫涵蓋 3,000+ 已知一次性域名，定期更新。
You can submit up to 100 email addresses per batch on both Free and Pro plans. The Free plan gives you 100 total verifications per month. Pro gives you unlimited monthly verifications across as many batches as you need.免費版和 Pro 版每批最多可提交 100 個 Email 地址。免費版每月提供 100 次總驗證。Pro 版提供無限次每月驗證，可執行任意批次數量。
Each email receives a 0–100 deliverability score. A score of 80 or above is considered high quality and safe to send to. Scores below 50 indicate risky or problematic addresses. The score factors in MX record status, disposable detection, role-based address classification, and syntax validity.每封 Email 獲得 0–100 到達率評分。80 分或以上視為高品質且可安全寄送，低於 50 分表示有風險或問題地址。評分考量 MX 記錄狀態、一次性偵測、角色型地址分類和語法有效性。
Yes. Pro plan subscribers get full access to the CoreStack Email Verify API. You can verify single emails with POST /verify or submit batches with POST /batch. API documentation is available inside the app after signing in.是的。Pro 方案訂閱者可完整存取 CoreStack Email Verify API。使用 POST /verify 驗證單封 Email 或使用 POST /batch 提交批次。API 文件在登入後可於應用程式內查看。
100 free verifications every month. No credit card. No emails sent to your contacts.每月 100 次免費驗證。無需信用卡。不會寄送郵件給您的聯絡人。
Start Verifying Free → 立即免費開始驗證 →