Email Etiquette in Japanese: A Guide for Professionals

In a Japanese office, your emails speak before you do. Before a client meets you in person, before a partner hears your pitch, they read your email — and they are reading more than just the content. They are reading your understanding of protocol, hierarchy, and professional respect.

Japanese business email follows a template-like structure that may feel rigid to Western professionals, but that structure is exactly what makes it learnable. Once you understand the anatomy of a proper business email, you can construct one with confidence every time.

This guide walks through each component, provides real Japanese examples, and addresses the mistakes that trip up foreign professionals most often.

The Anatomy of a Japanese Business Email

A standard Japanese business email consists of seven parts, in this order:

1. 件名 (kenmei) — Subject line
2. 宛名 (atena) — Recipient’s name and title
3. 挨拶 (aisatsu) — Opening greeting
4. 名乗り (nanori) — Self-identification
5. 本文 (honbun) — Main body
6. 結び (musubi) — Closing phrase
7. 署名 (shomei) — Signature block

Skipping any of these — or putting them in the wrong order — immediately signals to a Japanese reader that the sender is unfamiliar with professional norms. Let us break each one down.

1. 件名 — Subject Line

Japanese email subject lines are functional, not creative. The recipient should understand the purpose of the email without opening it.

Good examples:

• 3月20日　打ち合わせのご確認 — “Confirmation of March 20 meeting”
• お見積書送付のご連絡 — “Notice regarding submission of estimate”
• 【ご依頼】プロジェクトAの資料について — “[Request] Regarding Project A materials”

Notice the use of brackets【】to categorize the email type. Common prefixes include 【ご報告】(report), 【ご相談】(consultation), 【ご依頼】(request), and 【重要】(important). This helps recipients prioritize their inbox.

2. 宛名 — Recipient Name and Title

Always start with the recipient’s company name, department, and full name with the appropriate honorific. The standard format:

[会社名]
[部署名]
[名前] 様

For example:

株式会社山田商事
営業部
鈴木太郎 様

Key rules:

• Use 様 (sama) after individual names — this is the standard honorific for email
• If writing to a department without a specific person: [部署名] 御中 (onchuu) — the group honorific
• Never use both 様 and a title like 部長 (buchou, department head) together. It is either 鈴木部長 or 鈴木様 — not 鈴木部長様

3. 挨拶 — Opening Greeting

The opening greeting depends on your relationship with the recipient:

For external contacts (clients, partners, vendors):

• いつもお世話になっております。 (itsumo osewa ni natte orimasu) — “Thank you for your continued support.” The default for ongoing relationships.
• お世話になっております。 — Slightly less formal version, also widely used.
• 初めてメールをお送りいたします。 (hajimete meeru wo ookuri itashimasu) — “This is my first time emailing you.” For cold outreach.

For internal colleagues:

• お疲れ様です。 (otsukaresama desu) — “Thank you for your hard work.” The standard internal greeting.

Seasonal greetings (時候の挨拶 — jikou no aisatsu)

In formal correspondence, a seasonal reference follows the standard greeting. These are tied to the month and reflect the Japanese tradition of acknowledging the natural world in communication:

The same layers of respect you find in email keigo are on full display during a Tokyo tea ceremony experience, where every gesture and phrase follows a centuries-old protocol — a powerful way to feel the language rather than just memorize templates.

• January: 初春の候 (shoshun no kou) — “In the season of early spring”
• April: 桜花の候 (ouka no kou) — “In the season of blossoms”
• July: 猛暑の候 (mousho no kou) — “In the season of intense heat”
• October: 秋涼の候 (shuuryou no kou) — “In the season of autumn cool”
• December: 師走の候 (shiwasu no kou) — “In the month of December” (師走 is the traditional name for the 12th month)

These are used in first emails to new contacts, formal announcements, and seasonal correspondence. You do not need them for everyday internal emails.

4. 名乗り — Self-Identification

After the greeting, identify yourself — even if the recipient knows you. This is standard protocol:

[会社名]の[名前]でございます。

(“[Company name] no [name] de gozaimasu.” — “This is [name] from [company].”)

でございます is the most formal form of です. In routine emails to close colleagues, you can use です instead, but for external contacts, でございます is expected.

5. 本文 — Main Body

The body is where you state your purpose. Japanese business email values clarity and brevity, but always cushioned with politeness. A few structural principles:

Lead with the purpose

Use a topic sentence that states why you are writing:

• 本日は、[件名]についてご連絡いたしました。 — “I am contacting you today regarding [topic].”
• [件名]の件でメールいたしました。 — “I am emailing regarding the matter of [topic].”

Cushion your requests

Direct requests can feel abrupt in Japanese. Soften them with these standard phrases:

• お手数ですが (otesuu desu ga) — “I’m sorry for the trouble, but…” (precedes a request)
• お忙しいところ恐れ入りますが (oisogashii tokoro osoreirimasu ga) — “I realize you are busy, and I apologize, but…” (for time-sensitive requests)
• ご確認いただけますでしょうか (gokakunin itadakemasu deshou ka) — “Would you be able to confirm?” (polite request form)

Mention attachments explicitly

When attaching files, always state it in the body:

資料を添付いたしましたので、ご確認のほどよろしくお願いいたします。

(Shiryou wo tenpu itashimashita node, gokakunin no hodo yoroshiku onegai itashimasu.)

“I have attached the materials, so I would appreciate your review.”

Name attached files clearly and professionally — no casual abbreviations or personal shorthand.

6. 結び — Closing Phrase

The closing is formulaic and should match the email’s purpose:

• 何卒よろしくお願いいたします。 (nanitozo yoroshiku onegai itashimasu) — The most common formal closing. Used for requests, follow-ups, and general correspondence.
• ご検討のほど、よろしくお願いいたします。 (gokentou no hodo, yoroshiku onegai itashimasu) — “I kindly ask for your consideration.” Used when proposing something.
• お返事お待ちしております。 (ohenji omachi shite orimasu) — “I await your reply.” Polite but implies you expect a response.
• 引き続きよろしくお願いいたします。 (hikitsuzuki yoroshiku onegai itashimasu) — “I look forward to our continued cooperation.” For ongoing projects.

7. 署名 — Signature Block

Japanese email signatures are typically boxed with lines of hyphens or equals signs, and include comprehensive contact information:

━━━━━━━━━━━━━━━━━━━━━━━━
株式会社タビジ
マーケティング部
山田花子 (Yamada Hanako)

TEL: 03-1234-5678
Email: hanako@example.co.jp
〒100-0001 東京都千代田区...
━━━━━━━━━━━━━━━━━━━━━━━━

Include your postal code (〒), phone number, and full address. Japanese business culture values completeness in contact information.

CC and Reply Etiquette

CC usage in Japanese business email carries weight. A few rules that differ from Western norms:

• Always reply-all when CC’d. If the sender included people in CC, they need to stay informed. Replying only to the sender when others were CC’d is considered inconsiderate.
• CC hierarchy matters. When adding CC recipients, list them in hierarchical order — the most senior person first.
• Do not CC people you have not been introduced to. Adding unfamiliar contacts to a CC chain without context can create awkwardness and is seen as potentially leaking information.
• Acknowledge CC additions. If you are adding someone new to the CC, mention it in the email body: CCに[名前]を追加しております (CC ni [name] wo tsuika shite orimasu).

Common Mistakes Foreign Professionals Make

1. Being too direct

English-language business communication rewards getting to the point. Japanese email requires a runway — greeting, self-identification, purpose statement, cushioning phrase, then the request. Skipping straight to “Please send me the file” reads as demanding.

2. Misusing honorifics

The most damaging mistake: using sonkeigo (respectful language) about yourself instead of kenjougo (humble language). Saying ご説明されます about your own presentation, instead of ご説明いたします, inverts the hierarchy and can be perceived as arrogant.

3. Using emoticons or casual language

No emoji, no ^^, no (笑). Professional Japanese email is formal throughout. Even if a Japanese colleague uses casual shorthand in chat tools like Slack, do not carry that tone into email.

4. Forgetting to reply to the greeting

When someone opens with お世話になっております, you should mirror it back in your reply. Jumping straight into the content without this reciprocal greeting breaks the expected pattern.

5. Sending emails late at night

Sending business email outside of working hours — particularly late at night — can make the recipient feel pressured to respond immediately. If you draft emails late, schedule them for the next morning.

A Complete Email Template

Here is a full example — a follow-up email after a business meeting:

件名：3月15日　お打ち合わせのお礼

株式会社山田商事
営業部
鈴木太郎 様

いつもお世話になっております。
株式会社タビジの山田花子でございます。

本日はお忙しい中、お打ち合わせのお時間をいただき、
誠にありがとうございました。

お打ち合わせでご相談いただいた件につきまして、
社内で確認のうえ、来週中にあらためてご連絡いたします。

議事録を添付いたしましたので、
ご確認いただけますと幸いです。

何卒よろしくお願いいたします。

━━━━━━━━━━━━━━━━━━━━━━━━
株式会社タビジ
マーケティング部
山田花子 (Yamada Hanako)
TEL: 03-1234-5678
Email: hanako@example.co.jp
━━━━━━━━━━━━━━━━━━━━━━━━

Study how each component flows into the next — greeting, self-identification, gratitude, purpose, attachment mention, closing, signature. This structure works for the vast majority of business emails you will write.

Learning by Doing

Reading about email structure is a start. But fluency comes from writing real emails and getting feedback from someone who knows what a Japanese professional actually expects to see in their inbox.

At Tabiji Academy, our business Japanese lessons include email composition exercises where students draft real correspondence and receive line-by-line feedback from Mie, who spent years reading and writing these emails in corporate Tokyo. The patterns become second nature faster than you might expect — because the structure is consistent, each new email reinforces what you learned in the last one.

Whether you are already corresponding with Japanese colleagues or preparing for a role that will require it, professional email is one of the most practical and immediately applicable skills you can build.