はじめに｜ビジネス英語メールは「型」で9割解決する

「英語でメール書かなきゃいけないんだけど、何を書けばいいかわからない……」

グローバル化が進む2026年、突然英語でメールを書く必要に迫られる人が増えてるよね。

でも安心して。ビジネス英語メールは**「型」を覚えれば、英語力が高くなくても書ける**。

日本語のビジネスメールにも「お世話になっております」「ご確認のほどよろしくお願いいたします」みたいな決まった表現があるよね。英語も同じ。定型フレーズの組み合わせで、ほとんどのメールは書ける。

この記事では、場面別のテンプレート30選を紹介する。コピペして、固有名詞を入れ替えるだけで使えるから、ブックマークしておいてほしい。

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ビジネス英語メールの基本構造

まず、ビジネス英語メールの基本構造を理解しよう。

Subject: （件名）
Dear Mr./Ms. （宛名）,

（書き出し — 挨拶・目的の提示）

（本文 — 詳細・要件）

（結び — 次のアクション・お礼）

Best regards,
（自分の名前）
（肩書き・会社名）

件名の書き方

件名はメールの第一印象。簡潔かつ具体的に書くのが鉄則。

良い例：

• “Meeting Request: Q2 Marketing Review - April 10”
• “Re: Invoice #12345 - Payment Confirmation”
• “Action Required: Budget Approval by March 30”

悪い例：

• “Hello” （内容がわからない）
• “Important” （何が重要かわからない）
• “Question” （何についての質問かわからない）

宛名の使い分け

関係性	宛名
名前がわかる場合	Dear Mr. Smith, / Dear Ms. Johnson,
ファーストネームで呼べる関係	Dear John, / Hi Sarah,
部署宛て	Dear Marketing Team,
担当者不明	Dear Sir or Madam, / To Whom It May Concern,

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場面別テンプレート30選

カテゴリ1：初めての連絡（テンプレート1〜5）

テンプレート1：自己紹介メール

Subject: Introduction - [Your Name] from [Company]

Dear Mr./Ms. [Name],

I hope this email finds you well. My name is [Your Name],
and I am the [Job Title] at [Company Name].

I am writing to introduce myself as your new point of
contact for [project/account]. I look forward to working
with you and your team.

Please do not hesitate to reach out if you have any
questions or concerns.

Best regards,
[Your Name]

テンプレート2：取引先への初回連絡

Subject: Partnership Inquiry from [Company]

Dear Mr./Ms. [Name],

I am writing to inquire about a potential partnership
between [Your Company] and [Their Company].

We are a [brief description of your company], and we
believe there is a great opportunity for collaboration
in [specific area].

Would you be available for a brief call next week to
discuss this further?

Kind regards,
[Your Name]

テンプレート3：紹介経由の連絡

Subject: Introduction via [Mutual Contact's Name]

Dear Mr./Ms. [Name],

[Mutual Contact's Name] suggested I reach out to you
regarding [topic]. I am [Your Name] from [Company],
and I am interested in [purpose].

I would greatly appreciate the opportunity to discuss
this with you at your convenience.

Best regards,
[Your Name]

テンプレート4：サービス・製品の問い合わせ

Subject: Inquiry about [Product/Service Name]

Dear [Company/Sales Team],

I am interested in learning more about [product/service].
Could you please provide information regarding:

1. Pricing and available plans
2. Implementation timeline
3. Support options

Our company, [Company Name], is looking for a solution
to [specific need].

Thank you for your time. I look forward to hearing
from you.

Best regards,
[Your Name]

テンプレート5：見積もり依頼

Subject: Request for Quotation - [Product/Service]

Dear Mr./Ms. [Name],

We would like to request a quotation for the following:

- Item/Service: [description]
- Quantity: [number]
- Delivery date: [date]
- Delivery location: [address]

Please send the quotation by [date]. If you have any
questions, please feel free to contact me.

Thank you for your assistance.

Best regards,
[Your Name]

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カテゴリ2：会議・アポイントメント（テンプレート6〜10）

テンプレート6：会議の設定

Subject: Meeting Request: [Topic] - [Proposed Date]

Dear [Name],

I would like to schedule a meeting to discuss [topic].
Would [date] at [time] work for you? The meeting should
take approximately [duration].

Agenda:
1. [Item 1]
2. [Item 2]
3. [Item 3]

Please let me know if this time works or suggest an
alternative.

Best regards,
[Your Name]

テンプレート7：会議の確認

Subject: Confirmation: Meeting on [Date]

Dear [Name],

This is to confirm our meeting scheduled for [date]
at [time]. We will meet at [location/via Zoom].

Please find the agenda attached. If you need to make
any changes, please let me know.

Looking forward to our discussion.

Best regards,
[Your Name]

テンプレート8：会議のリスケジュール

Subject: Reschedule Request: Meeting on [Original Date]

Dear [Name],

I apologize for the inconvenience, but I need to
reschedule our meeting originally planned for [date].

Would [new date] at [new time] be available for you?
I sincerely apologize for any disruption this may cause.

Thank you for your understanding.

Best regards,
[Your Name]

テンプレート9：会議のキャンセル

Subject: Cancellation: Meeting on [Date]

Dear [Name],

I regret to inform you that I need to cancel our
meeting scheduled for [date] due to [brief reason].

I will follow up to reschedule at a more convenient
time. I apologize for any inconvenience.

Best regards,
[Your Name]

テンプレート10：会議の議事録送付

Subject: Meeting Minutes - [Meeting Topic] - [Date]

Dear Team,

Thank you for attending today's meeting. Please find
the meeting minutes below:

Key Discussion Points:
1. [Point 1]
2. [Point 2]

Action Items:
- [Person]: [Task] by [Deadline]
- [Person]: [Task] by [Deadline]

Next Meeting: [Date and Time]

Please let me know if I missed anything or if you
have any questions.

Best regards,
[Your Name]

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カテゴリ3：依頼・お願い（テンプレート11〜15）

テンプレート11：資料の送付依頼

Subject: Request: [Document Name]

Dear [Name],

Could you please send me the [document name] at your
earliest convenience? I need it for [purpose/project].

If possible, I would appreciate receiving it by [date].

Thank you for your help.

Best regards,
[Your Name]

テンプレート12：確認の依頼

Subject: Confirmation Required: [Topic]

Dear [Name],

Could you please confirm the following:

1. [Item to confirm]
2. [Item to confirm]

I need this confirmation by [date] to proceed with
[next step].

Thank you for your prompt response.

Best regards,
[Your Name]

テンプレート13：フィードバックの依頼

Subject: Request for Feedback: [Project/Document]

Dear [Name],

I have attached [document/proposal] for your review.
I would greatly appreciate your feedback, particularly
regarding:

1. [Specific area]
2. [Specific area]

Could you please provide your comments by [date]?

Thank you in advance.

Best regards,
[Your Name]

テンプレート14：締切延長の依頼

Subject: Request for Deadline Extension - [Project]

Dear [Name],

I am writing to request an extension for [task/project].
Due to [reason], I am unable to complete it by the
original deadline of [date].

Would it be possible to extend the deadline to [new date]?
I assure you that the quality of work will not be
compromised.

I apologize for any inconvenience and appreciate your
understanding.

Best regards,
[Your Name]

テンプレート15：承認の依頼

Subject: Approval Required: [Item]

Dear [Name],

I am seeking your approval for [item/proposal].
Please find the details attached.

Key points:
- Budget: [amount]
- Timeline: [dates]
- Expected outcome: [description]

Could you please review and approve by [date]?

Thank you for your consideration.

Best regards,
[Your Name]

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カテゴリ4：お礼・フォローアップ（テンプレート16〜20）

テンプレート16：会議後のお礼

Subject: Thank You for Today's Meeting

Dear [Name],

Thank you for taking the time to meet with me today.
I found our discussion about [topic] very productive.

As discussed, I will [action item]. I will send you
an update by [date].

I look forward to our continued collaboration.

Best regards,
[Your Name]

テンプレート17：取引先へのお礼

Subject: Thank You for Your Support

Dear [Name],

I wanted to express my sincere gratitude for your
support with [project/matter]. Your assistance was
invaluable and greatly appreciated.

We look forward to continuing our productive
partnership.

Warm regards,
[Your Name]

テンプレート18：面接後のお礼

Subject: Thank You - [Position] Interview

Dear [Interviewer's Name],

Thank you for the opportunity to interview for the
[position] role today. I enjoyed learning more about
[company] and the team.

I am very enthusiastic about the possibility of
contributing to [specific project/goal discussed].

Thank you again for your time and consideration.

Best regards,
[Your Name]

テンプレート19：進捗報告メール

Subject: Progress Update: [Project Name] - [Date]

Dear [Name],

Here is the weekly progress update for [project]:

Completed:
- [Task 1]
- [Task 2]

In Progress:
- [Task 3] - Expected completion: [date]

Upcoming:
- [Task 4]

Issues/Blockers:
- [Issue, if any]

Please let me know if you have any questions.

Best regards,
[Your Name]

テンプレート20：フォローアップメール

Subject: Following Up: [Original Topic]

Dear [Name],

I am following up on my email sent on [date] regarding
[topic]. I understand you may be busy, but I wanted to
check if you had a chance to review my request.

I would appreciate any update at your convenience.

Thank you for your time.

Best regards,
[Your Name]

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カテゴリ5：謝罪・問題対応（テンプレート21〜25）

テンプレート21：納期遅延の謝罪

Subject: Apology for Delay - [Project/Order]

Dear [Name],

I sincerely apologize for the delay in [deliverable].
Due to [reason], we were unable to meet the original
deadline.

The revised delivery date is [new date]. We are taking
steps to ensure this does not happen again.

I appreciate your patience and understanding.

Best regards,
[Your Name]

テンプレート22：ミスの謝罪

Subject: Correction: [Error Description]

Dear [Name],

I want to apologize for the error in [document/email].
The correct information is as follows:

[Corrected information]

I have taken measures to prevent similar mistakes in
the future. Please disregard the previous version.

I sincerely apologize for any confusion caused.

Best regards,
[Your Name]

テンプレート23：クレーム対応

Subject: Re: [Original Complaint Subject]

Dear [Name],

Thank you for bringing this to our attention. I sincerely
apologize for the inconvenience you have experienced.

We have investigated the issue and [explanation/solution].
To resolve this, we will [corrective action].

Please do not hesitate to contact me directly if you
have any further concerns.

Best regards,
[Your Name]

テンプレート24〜25：辞退・お断り

Subject: Regarding [Proposal/Invitation]

Dear [Name],

Thank you for [the proposal/invitation]. After careful
consideration, I regret to inform you that we are
unable to [accept/proceed] at this time due to [reason].

We truly appreciate the opportunity and hope to explore
possibilities in the future.

Thank you for your understanding.

Best regards,
[Your Name]

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カテゴリ6：その他のよく使うメール（テンプレート26〜30）

テンプレート26：不在通知（Out of Office）

Subject: Out of Office: [Your Name]

Thank you for your email. I am currently out of the
office from [start date] to [end date] with limited
access to email.

For urgent matters, please contact [colleague's name]
at [email].

I will respond to your email upon my return.

Best regards,
[Your Name]

テンプレート27：添付ファイルの送付

Subject: [Document Name] - As Discussed

Dear [Name],

Please find attached [document name] as discussed.
The document includes [brief description].

Please let me know if you have any questions or need
any modifications.

Best regards,
[Your Name]

テンプレート28〜30：催促、紹介依頼、退職挨拶

これらも上記と同様のフォーマットで、場面に応じた丁寧な表現を使う。催促は “gentle reminder” を使い、紹介依頼は “I would be grateful if you could introduce me to…” の型を使う。

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知っておくべき便利フレーズ集

書き出しフレーズ

• “I hope this email finds you well.” — 定番の挨拶
• “Thank you for your prompt reply.” — 返信へのお礼
• “I am writing to inform you that…” — 情報共有
• “I am writing to inquire about…” — 問い合わせ
• “Further to our conversation…” — 会話の続き

結びフレーズ

• “I look forward to hearing from you.” — 返信待ち
• “Please do not hesitate to contact me.” — 連絡歓迎
• “Thank you for your time and consideration.” — お礼
• “I appreciate your prompt attention to this matter.” — 迅速対応のお願い

署名の使い分け

• Best regards, — 最も一般的
• Kind regards, — やや親しみ
• Sincerely, — フォーマル
• Thanks, — カジュアル（社内メール向き）

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よくある質問

Q. 返信が遅くなった場合はどう書く？

A. “I apologize for the delayed response.” または “Thank you for your patience.” を冒頭に添えれば問題ない。

Q. CCとBCCの使い分けは？

A. CC（Carbon Copy）は「この人にも共有してます」の意味。BCC（Blind Carbon Copy）は他の受信者に見えない形で共有。大量の外部宛先にはBCCを使うのがマナー。

Q. 英語メールで「お疲れ様です」は何て書く？

A. 英語には「お疲れ様です」に直接対応する表現はない。代わりに “I hope this email finds you well.” や “Thank you for your hard work on [project].” を使おう。

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まとめ｜テンプレートを味方につけよう

ビジネス英語メールは、テンプレートを覚えれば怖くない。

1. 基本構造（件名→宛名→書き出し→本文→結び→署名）を守る
2. 場面に合ったテンプレートをコピペして使う
3. 定型フレーズで書き出しと結びを固める
4. 簡潔に、具体的に書く
5. 送信前に必ず見直す（スペルミス、宛名の間違い）

この記事をブックマークしておけば、英語メールに困った時にいつでも参照できるよ。