邮递员每天都会把邮件送到我们的信箱里。

The postman delivers our ___mail to the mailbox every day.

我每天都会收到很多工作邮件。

I receive a lot of work-related ___emails every day.

这件由金属环制成的铠甲非常沉重。

The ___mail made of metal rings was extremely heavy.