About Us
发送猫由厦门发送猫科技有限公司提供，是一款面向手机、平板和电脑的跨屏输入与局域网传输工具。
SendCat is provided by Xiamen Sending Cat Technology Co., Ltd. It is a cross-device input and local network transfer tool for phones, tablets, and computers.
What We Do
发送猫用于在可信设备之间进行文本发送、手机输入直达电脑、电脑截图直传手机、剪贴板同步、图片和文件传输、设备关系管理、历史记录和提示词收集管理。产品优先服务个人多设备使用场景，让手机、电脑之间的输入和传输更直接。
SendCat helps trusted devices send text, input from phone to desktop, transfer desktop screenshots to phone, sync clipboard content, transfer images and files, manage device relationships, keep history, and organize prompt fragments. It is designed for personal multi-device workflows.
Devices And Connections
发送猫主要依赖同一局域网、个人热点或用户授权的网络环境发现设备。你可以将设备设置为“我的设备”“好友设备”或保持为陌生设备，并按需开启剪贴板、截图、图片和文件传输。
SendCat mainly discovers devices on the same local network, personal hotspot, or other user-authorized network environment. You can mark devices as My Devices, Friend Devices, or leave them as unknown devices, and enable clipboard, screenshot, image, or file transfer as needed.
Security Principles
剪贴板、图片和文件传输会结合设备关系、配对密钥、设备 ID、会话 ID 和操作类型进行校验，并使用 AES-GCM 加密降低误传、窃听和篡改风险。你仍应只在可信网络和可信设备之间传输敏感内容。
Clipboard, image, and file transfers are checked with device relationships, pairing keys, device IDs, session IDs, and operation types, and are protected with AES-GCM encryption to reduce accidental delivery, eavesdropping, and tampering risks. You should still transfer sensitive content only on trusted networks and trusted devices.
Membership And Platforms
Android 会员按手机号账号生效，也可通过第三方验证登录进行身份确认；这些第三方验证仅用于验证登录，不会额外收集无关信息。一个手机号最多登录 2 台 Android 会员设备，包括 Android 手机、Android 平板和安装 Android 系统的电脑。iOS/iPadOS 端已移除手机号账号登录和第三方验证登录，会员仅通过 Apple App Store 官方订阅或购买记录开通、恢复和管理。Android 与 iOS/iPadOS 会员相互独立，不互通、不合并有效期、不互相恢复购买。
Android membership is tied to a phone-number account and may also use third-party verification login for identity confirmation; these third-party verifications are used only to validate login and do not collect unrelated information. One phone number may sign in to up to two Android membership devices, including Android phones, Android tablets, and computers running Android. iOS/iPadOS no longer provides phone-number login or third-party verification login, and membership is opened, restored, and managed only through official Apple App Store subscriptions or purchase records. Android and iOS/iPadOS memberships are independent and do not share entitlements, validity periods, or purchase restoration.
Contact Us
如你遇到登录、会员、设备发现、局域网传输、账号注销、隐私、数据删除、Bug、投诉或建议相关问题，可以通过发送猫 App 或电脑端内的“反馈/联系我们”窗口提交，也可以通过邮箱联系我们。请尽量说明 App 版本、设备型号、系统版本、问题发生步骤和截图。
For login, membership, device discovery, local network transfer, account deletion, privacy, data deletion, bugs, complaints, or suggestions, you may submit them through the Feedback / Contact Us window in the SendCat app or desktop client, or contact us by email. Please include the app version, device model, system version, reproduction steps, and screenshots when possible.
如果你在反馈窗口选择提交 Bug，客户端可能随反馈一并发送最近 10 条诊断日志，用于定位崩溃、连接失败、传输异常或兼容性问题。建议、普通咨询或投诉通常不默认附带诊断日志，具体以提交界面提示为准。
If you choose to submit a bug in the feedback window, the client may send the most recent 10 diagnostic logs with the report to help investigate crashes, connection failures, transfer errors, or compatibility issues. Suggestions, general inquiries, or complaints usually do not include diagnostic logs by default, subject to the notice shown in the submission interface.
Email: gua@sendcat.link