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云邮, also known as 企业云邮, is a cloud-based enterprise email service designed to support business communication and everyday work. Its platform brings together email and practical productivity features, including real-time email monitoring, support for oversized attachments, WeChat notifications, and anti-spam protection. Users can also access personal and company cloud drives, along with calendar and schedule reminders, making it possible to manage messages, files, and appointments in one service.

云邮 provides separate login options for email users and administrators, as well as WeChat QR-code login for users who have followed the official account through notification settings. The service offers clients for Android, iPhone, and Windows, with downloads available through QR codes or, for the iPhone app, the App Store. A browser-based login is also available, although the site notes that its temporary web access address may have limited functionality. Businesses are advised to complete domain registration and then use a mail address under their own domain to access the service.