”Business Japanese Email Materials” by Former HR & Teacher | mailun-lab

At mailun-lab, we provide self-study materials designed to help you master business Japanese e-mails.

Our goal is not just to help you write “correct” Japanese, but to empower you to express your thoughts and intentions clearly through text.

In e-mails, where you cannot see the other person’s face, your choice of words is the only way to convey your feelings.

Building strong professional relationships is key to working smoothly in Japan.

To be honest, even for native Japanese speakers, this is a challenge.

So, please don’t worry if you find it difficult at first.

At mailun-lab, we are here to support Japanese learners who struggle with e-mail writing. If you’re looking to improve your skills, please read on.

＼Japanese business etiquette／
「日本で働くためのビジネス基礎講座きそこうざ」

Do you have any of these concerns?

“It takes way too much time to write an e-mail in Japanese.”

“I’m so afraid of being rude that I’m scared to hit the ‘send’ button.”

You are not alone. Many Japanese language learners face these exact same challenges.

In the Japanese business world, an e-mail is more than just a way to communicate—it is a vital tool for building “trust.”

At mailun-lab, we offer materials designed to help you send e-mails with confidence.

About the Materials

Our materials include furigana and English translations and are designed for learners with at least a JLPT N3 level of proficiency.

All materials are structured for self-study, allowing you to learn independently.

*Contents vary depending on the type of material purchased.

【Textbooks】

This material covers a broad spectrum of topics, including basic etiquette and practical phrases tailored to specific business scenes.

1. ビジネス日本語eメール-基本きほん–
2. ビジネス日本語eメール-基礎編きそへん–
3. ビジネス日本語eメール-応用編おうようへん–

【Workbooks】

Based on the textbook, this workbook allows you to review fundamental rules and practice writing actual business e-mails. It’s perfect for those who want plenty of hands-on output.

1. ビジネス日本語eメール-ワークブック-基礎編きそへん–
2. ビジネス日本語eメール-ワークブック-応用編おうようへん–
3. 【回答かいとう】ビジネス日本語eメール-ワークブック-基礎編きそへん–
4. 【回答かいとう】ビジネス日本語eメール-ワークブック-応用編おうようへん–

【Supplementary Materials: Foundation Level】

These materials allow you to study the contents of the “Business Japanese E-mail – Foundation Level” in even greater detail and depth.

*Not available for individual purchase. This material is included exclusively as part of a bundle set.

1. Lesson１：ビジネスメールの基本
2. Lesson２：敬語けいご
3. Lesson３：件名けんめい
4. Lesson４：宛先あてさき
5. Lesson５：宛名あてな
6. Lesson６：その他

【Supplementary Materials: Practical Level】

Based on the “Business Japanese E-mail – Practical Level,” these materials provide exercises for writing e-mails in real-life business scenarios. Each practice session features three different situations, allowing you to practice writing appropriate e-mails for various contexts.

*Not available for individual purchase. This material is included exclusively as part of a bundle set.

1. Practice１：書き始め
2. Practice２：お礼れい・感謝かんしゃ
3. Practice３：謝罪しゃざい
4. Practice４：依頼いらい
5. Practice５：相談そうだん・質問しつもん
6. Practice６：了承りょうしょう
7. Practice７：断ことわり
8. Practice８：催促さいそく
9. Practice９：申請しんせい

*Each practice includes both questions and sample answers.

【Additional Resources】

*Not available for individual purchase. These materials are included exclusively as part of a bundle set.

1. 間違まちがいやすい表現
2. セルフチェックリスト

Options

1. Textbook
2. Workbook (includes answers)
3. Textbook & Workbook Bundle (includes answers)
4. Complete Pack

Pricing Details

Pricing for the materials is as follows:

The materials are available in PDF or Word format and are designed for self-study.

Why Choose Our Materials?

While there are many Japanese business email resources available, here are three reasons why we highly recommend the materials from mailun-lab.

1.Created by an Ex-HR Japanese teacher

Mailun-lab is run by a Japanese language teacher with a background in Human Resources.

During my time in HR, I was responsible for employee training and supporting international staff.

My teaching materials are built directly on that professional experience.

Furthermore, having worked in London and Frankfurt, I have also experienced being an “international employee” myself. I develop these resources by incorporating the specific insights and challenges I faced while working abroad.

2.Master the “Why”

In my experience, I have noticed that many people know what they should do, but don’t always understand why they need to do it.

That is why my materials focus on the reasoning behind Japanese business etiquette—explaining why Japanese people act the way they do and why certain approaches are preferred.

By providing insights into Japanese perspectives and values, I hope to help you act with a clear understanding of the underlying reasons and cultural background.

3.Ready-to-use samples

The “Textbook –応用編おうようへん-” introduces phrases and expressions for various situations, allowing you to use them immediately in actual business emails.

In particular, the “Supplementary Materials -Practical Level-” (Practice 1–9) included in the Complete Pack feature approximately 30 email response samples.

These are based on the actual phrases and expressions I use in my professional life.

Because these materials are built on my firsthand experience, the content is exceptionally realistic.

Benefits of Purchasing the Study Material

When you purchase the study materials from mailun-lab, I think you will gain three key benefits to boost your career.

1.Save Time

“Are you spending too much time drafting a single email?”

Our materials are packed with common, situational phrases that are ready for immediate use in real-world business. You can simply copy and paste them!

By reducing the time spent on writing, you can focus more on your core tasks and improve your overall work efficiency.

2.Gain Confidence

“Is this expression rude?” 

“Is my Keigo correct?”

Do you often feel anxious before hitting the ‘send’ button?

Our materials are filled with phrases that I personally use in professional business settings.

They will help you clear up any doubts and communicate with peace of mind.

3.Build Trust

Writing professional business emails is directly linked to earning trust from your colleagues and clients.

Our materials cover more than just “correct Japanese”—they also include “cushion words” and expressions of consideration for the recipient.

Polite, easy-to-read emails will help you build smoother relationships with both your internal team and external partners.

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