Professors might not open mail sent from luckydogpig@thepound.com.

教授们可不喜欢打开从luckydogpig@thepound.com发来的邮件。

youdao

I sat down to open the mail.

我坐下来打开信件。

《牛津词典》

Send Them Snail mail: Most people when they open their mailbox are bombarded by bills and junk mail.

寄信：大多数人打开信箱的时候都只能收到账单和垃圾邮件的狂轰乱炸。

youdao

You may feel most of it is junk mail, but you could also be missing out on important notices or deadlines if you do not open your mail in a timely manner.

FORBES: Can Financial Procrastination Cause Heartburn?

I've had the government open my mail and listen in on my phone.

CENTERFORSECURITYPOLICY: Monica Crowley, Mightier Pen 2012

No matter how intimidating it might be, always open the mail.

FORBES: Taxes From A To Z (2013): N Is For Notice Of Deficiency