Quick Reference

Meaning & Definition

Denshi meeru (電子メール) is the formal Japanese term for email — a combination of the native Japanese word for ‘electronic’ and the English loanword ‘mail.’ In practice, most Japanese people just say meeru (メール) — but knowing the formal term is essential for professional contexts.

Denshi meeru (電子メール) literally means ‘electronic mail’ — denshi (電子, electron/electronic) + meeru (メール, mail, from English). It’s the full, formal term for email used in business writing, official documents, and formal speech. In everyday conversation, meeru alone suffices. The compound meeru wo okuru (メールを送る, to send an email), meeru ga kita (メールが来た, an email arrived), and meeru wo kakunin suru (メールを確認する, to check email) are the core phrases for email communication. In Japanese business culture, email (denshi meeru) is still a primary communication tool alongside messaging apps, and email etiquette (meeru no manner) is explicitly taught in corporate onboarding.

How to Use It

In Japanese business emails, the opening and closing formulae are highly standardized. A typical opening is Itsumo o-sewa ni natte orimasu (いつもお世話になっております, ‘Thank you always for your support’) — said even to clients you’ve never met. Closing with Yoroshiku onegai itashimasu (よろしくお願いいたします, ‘I look forward to your continued cooperation’) is mandatory. Skipping these formulae marks you as unfamiliar with Japanese business communication norms. The subject line (ken, 件名) should be concise and descriptive.

Kanji Breakdown

電子メール uses 電 (den — electricity), 子 (shi — child, particle) — the kanji pair meaning ‘electron/electronic’ — plus the katakana loanword メール (meeru, mail). The kanji pair 電子 also appears in 電子書籍 (denshi shoseki, e-book) and 電子辞書 (denshi jisho, electronic dictionary).

Example Sentences

Cultural Context

Japanese business email culture has strict conventions that differ markedly from casual Western email practices. The meeru no manner (メールのマナー, email etiquette) includes: always including a greeting at the top, identifying your company and name in the first line (kabushiki kaisha X no Y to moushimasu), using honorific language throughout, and closing with a specific sign-off phrase. Business emails in Japan are often longer than Western equivalents because omitting any formal phrase is considered rude.

Japan’s relationship with denshi meeru is complicated by the simultaneous dominance of LINE (ライン), the messaging app used by over 95% of Japanese smartphone users. For personal communication, most Japanese people use LINE messages (messeeji) rather than email. For business, email remains standard at many large companies, though younger workers increasingly push for Slack or Teams. This generational and sector divide means that knowing both meeru manner and messaging app etiquette is necessary for working in Japan.

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