noun, noun or participle which takes 'suru'
checking one's e-mail
Wasei-eigo (Japanese-made English) for the act of checking email. Used as a noun or with する to mean 'check email'.
wasei-eigo (Japanese-coined English), from mail check
朝起きたらまずメールチェックをする。
When I wake up in the morning, the first thing I do is check my email.
メールチェックを忘れずに。
Don't forget to check your email.
Variant with interpunct; less common in everyday writing.
メール means 'email' or 'mail', while メールチェック specifically refers to the action of checking it.
Wasei-eigo from English 'mail check'.