This is the 1761st most frequent Japanese word.
メール
Email.
In this sentence, "メール" refers to an email message received electronically.
新しいメールを受け取りました。
I received a new email.
Here, "メール" denotes the medium of electronic email for communication.
明日はメールで連絡してください。
Please contact me via email tomorrow.
In this usage, "メール" is part of the compound "メールボックス," meaning a mailbox, commonly referring to an email inbox in modern contexts.