所有邮件都会被下载到本地，然后备份。

All mail is downloaded locally and can be backed up.

youdao

然后备份和还原就通过远程设备来处理。

Backups and restores are then handled through the remote device.

youdao

邮件，要升级为Yahoo Mail Plus才能获得POP存取权限，然后使用喜欢的电子邮件客户程序下载所有邮件，然后备份。

With Yahoo! Mail, you upgrade to Yahoo mail Plus to get POP access, then use your preferred E-mail client to download all your mail, then backup.

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