Examples of formal versus informal Japanese email language
Here are examples of formal versus informal Japanese email language, showing how the tone, wording, and level of directness change with the relationship and situation. In Japanese email, the biggest differences are not just individual words but the whole package: the salutation, the greeting line, the level of politeness in verbs, and the closing.
Formal Japanese Email Language
- Used with superiors, clients, or external partners in business or respectful contexts.
- Often includes honorifics and humble expressions.
- Example phrases:
- 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.”
- 先ほどはありがとうございました (Sakihodo wa arigatou gozaimashita) — “Thank you for your time just now.”
- 大変恐縮ですが、よろしくお願い申し上げます (Taihen kyoushuku desu ga, yoroshiku onegai moushiagemasu) — “I am very sorry to trouble you, but thank you in advance.”
- 突然のご連絡、失礼いたします (Totsuzen no gorenraku, shitsurei itashimasu) — “Sorry for the sudden email.”
- お気軽にご連絡ください (Okigaru ni gorenraku kudasai) — “Please feel free to contact me.”
- Example email opening:
Formal Japanese email often uses keigo, or honorific language, to show respect and reduce bluntness. A key feature is the use of humble forms such as いたします instead of します, which softens the speaker’s position. In business mail, even a simple request is often padded with an apologetic phrase like 恐れ入りますが or 恐縮ですが, because direct commands can sound abrupt.
The greeting いつもお世話になっております is one of the most common business openers in Japanese. It is not a literal “hello”; it signals an ongoing professional relationship and is standard in messages to clients, suppliers, and colleagues outside one’s immediate team. Another common formal pattern is to mention the sender’s name and company right after the greeting, which helps the recipient place the message immediately.
Formal email also tends to use more fixed closing expressions. よろしくお願い申し上げます is stronger and more ceremonial than the everyday よろしくお願いします. Likewise, 失礼いたします is a polite way to end a message, especially when the email is short or when the sender is asking for something.
Informal Japanese Email Language
- Used among close colleagues, friends, or in casual settings.
- More direct, uses plain forms instead of honorifics.
- Example phrases:
- ありがとう (Arigatou) — “Thanks” instead of ありがとうございます
- よろしくお願いします (Yoroshiku onegaishimasu) — standard polite but less formal closing
- 気軽に連絡してね (Kigaru ni renraku shite ne) — “Feel free to contact me” (casual)
- それで大丈夫？ (Sore de daijoubu?) — “Is that okay?”
- Pronouns and verb forms are less formal:
- Informal: わかんない (Wakannai) vs Formal: わかりません (Wakarimasen)
- Referring to oneself: ぼく (boku) or 私 (watashi) in informal versus 私 (watashi) in formal
- Greetings like やあ or こんにちは, depending on closeness, greetings are simpler and less ritualized. 3 4
Informal Japanese email is usually shorter and less ceremonious. It drops many of the phrases that make business mail sound careful and respectful. Verbs often appear in plain form, and sentence endings can sound softer or more conversational, especially if the sender and recipient already know each other well. In casual email, ね and よ can make a message feel warmer and more personal.
The difference between わかりません and わかんない is a good example of formality in action. Both mean “I don’t understand,” but わかりません is standard polite Japanese, while わかんない is conversational and best reserved for people one speaks with casually. The same pattern appears with ありがとう versus ありがとうございます: the shorter form sounds more relaxed, while the longer form is safer in professional settings.
When Japanese Email Sounds Natural
A polite email does not have to be stiff, and an informal email does not have to be rude. Natural Japanese email matches three things: the relationship, the purpose, and the amount of distance between writer and reader. A client-facing email usually stays formal even if the message is brief. A message to a close coworker or friend can be simple and direct without sounding cold.
One common mistake is mixing levels of politeness within the same email. For example, an opening like いつもお世話になっております followed by a very casual closing such as じゃあね creates a mismatch. Another common problem is using plain-form verbs with someone who expects business politeness. In Japanese, this can feel sharper than it does in English because formality is carried by the grammar itself, not only by vocabulary.
Summary Table of Example Phrases
| Purpose | Formal Japanese | Informal Japanese |
|---|---|---|
| Greeting | こんにちは。はじめまして。 | やあ。はじめまして。 |
| Thanking | ありがとうございます。 | ありがとう。 |
| Request | お願いします。 | 頼む。 |
| Saying Sorry | 申し訳ございません。 | ごめん。 |
| Question | わかりません。 | わかんない。 |
| Closing | よろしくお願い申し上げます。 | よろしくお願いします。 |
This table shows a useful rule of thumb: formal Japanese often chooses longer, more indirect expressions, while informal Japanese favors shorter, simpler wording. In email, that difference is especially noticeable in requests and apologies, where formal language often adds a buffer before the main point. In conversation practice, especially when rehearsing workplace scenarios, this distinction becomes much easier to hear and use accurately.
Quick usage patterns
- To a client or professor: use 様, いつもお世話になっております, and polite verbs such as いたします or ご確認ください.
- To a close coworker: a message may still be polite, but it can usually be shorter and less ceremonial.
- To a friend: plain forms, simple greetings, and casual closings are normal.
- If unsure: choose slightly more formal language; in Japanese email, being too casual is usually riskier than being a little too polite.
These examples show how formal emails maintain polite, respectful, and carefully structured language, while informal emails use more relaxed and casual expressions suited to familiar relationships.