Top-10 Resources for Business Email Writing (ESL)

Language Systems International How to Write a Professional Email in English

Description:

Language Systems International How to Write a Professional Email in English explains the parts of a work email and how to put them together, published by the English-language school Language Systems International. It covers what makes an email effective, the format to follow, openings, the body, closings, a rewritten example, ten phrases for common situations and the mistakes to avoid.

100% Free (unlimited): Reading the guide takes no account and no payment, and the example, the phrase list and the section on mistakes are all on the page. Language Systems International is a school and lists its programs and prices elsewhere on the site; the article stays open to anyone.

Access: 100% Free Level: Intermediate (B1-B2) Format: Article / Lesson/Tutorial Written for: Business English (ESL) English Variant: US

How It Helps Your Business English

What this resource offers:

The guide sets out what makes a professional email effective, then the format every email should follow: subject line, greeting, body and sign-off. It shows how to open, how to write a body with one clear purpose and how to end, rewrites an informal email into a workplace version, lists ten phrases for common situations, and names the mistakes that come up most.

How to use this resource:

You can follow the structure section while you draft so that each part of your email does one job, and compare your draft with the rewritten example to see what a more professional version changes. You can take a line from the ten phrases when you are stuck on how to ask for something, and read the list of mistakes before you send.

Note:

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Last verified — Oct. 18, 2026