10 Business Email Mistakes Koreans Commonly Make (And How to Fix Them)

Writing a grammatically correct email in English is one thing. Writing an email that sounds natural and professional to a native English speaker is a different skill entirely. There is a wide gap between what is technically correct and what is actually used in professional settings.

The ten mistakes below come up repeatedly in business emails from Korean professionals. None of them will make your email unreadable, but correcting them will immediately make your writing sound more polished and confident.

Mistake 1 — Using "ASAP" Without a Deadline

Avoid: "Please respond as soon as possible."
Better: "Please respond by Thursday, April 10th, by 5 PM KST."

ASAP is vague. From the recipient's perspective, "as soon as possible" could mean tomorrow or in a week, depending on what else they have going on. A concrete deadline removes ambiguity and improves response rates. If you genuinely need a response urgently, say "I need this by 3 PM today to meet a deadline" — the reason makes the urgency credible.

Mistake 2 — "I want to" Instead of "I would like to"

Avoid: "I want to schedule a meeting."
Better: "I'd like to schedule a meeting." or "I would appreciate the opportunity to discuss..."

"I want" sounds direct to the point of being blunt in formal written English. "I'd like" (contraction of "I would like") is the standard professional register. This is a small change with a noticeable effect on tone.

Mistake 3 — "Please check" When You Mean "Please Review"

Avoid: "Please check the attached document."
Better: "Please review the attached document and share your feedback by Friday."

"Check" implies a quick confirmation that something exists or is working. "Review" implies reading carefully and forming a judgment. For contracts, proposals, reports, or any document requiring thoughtful attention, "review" is the right verb.

Mistake 4 — Apologizing With "I'm Sorry" Instead of Expressing Thanks

Avoid: "I'm sorry for the late reply."
Better: "Thank you for your patience." or "Apologies for the delayed response — here is the information you requested."

In many Western professional cultures, excessive apologies signal low confidence. Reframing "sorry for the delay" as "thank you for your patience" acknowledges the delay while projecting a more assured tone. Save direct apologies for situations that genuinely warrant them.

Mistake 5 — "I will try to" as a Commitment

Avoid: "I will try to send the report by Friday."
Better: "I will send the report by Friday." or "I expect to have the report ready by Friday — I will flag you immediately if anything changes."

"I will try" signals that you might not deliver. In most professional contexts, recipients interpret this as hedging on a commitment. If you have a genuine uncertainty, the second example above is cleaner: make the commitment, then set up an exception clause.

Mistake 6 — Typing "RE:" Manually in a New Email Subject

Avoid: Subject line typed as "RE: Project Update"
Better: A clear, descriptive subject — "Follow-up: Q2 Project Status and Next Steps"

Email clients add "RE:" automatically when you reply to a message. Typing it manually on a new email creates confusion — it looks like a reply to a conversation that does not exist in the recipient's inbox. Write subject lines that stand alone and describe the email's content.

Mistake 7 — Over-Hedging a Request

Avoid: "Could you possibly let me know if you might be able to have a chance to look at this when you have time?"
Better: "Could you review this and share your thoughts by Wednesday?"

Polite requests require exactly one softening element — "could you," "would you mind," or "kindly." Adding multiple hedges ("possibly," "might," "if you have a chance") makes the email harder to read and makes the writer seem uncertain. State what you need clearly and add one polite framing.

Mistake 8 — "I look forward to hear" (Grammar Error)

Avoid: "I look forward to hear from you."
Better: "I look forward to hearing from you."

"Look forward to" is a phrasal verb that requires a gerund (the -ing form) after it, not an infinitive. This is one of the most common grammatical errors in professional emails, and it appears prominently at the end where it leaves a lasting impression. Get this one right.

Mistake 9 — Using the Wrong Closing

Using "Best regards" for a first cold email to a senior executive
Match the closing to the relationship and context:

• First formal email to a senior contact: "Sincerely" or "Respectfully"
• Professional but established relationship: "Best regards" or "Kind regards"
• Regular working relationship: "Best" or "Thanks"
• Internal team emails: "Thanks" or no closing phrase at all

Mistake 10 — Ambiguous Date Formats

Avoid: "Let's meet on 04/06" (April 6 in the US, June 4 in the UK)
Better: "Let's meet on April 6" or "Let's meet on Monday, 6 April 2026"

The numeric date format is interpreted differently in the US (month/day) and the UK and much of Europe (day/month). In international business email, spell out the month name. There is no ambiguity with "April 6" or "6 April."

Quick Reference

Situation	Avoid	Use Instead
Deadline	ASAP	by [specific date and time]
Request	I want to	I'd like to
Document review	Please check	Please review
Late response	I'm sorry for the delay	Thank you for your patience
Commitment	I will try to	I will / I expect to
Closing phrase	I look forward to hear	I look forward to hearing
Dates	04/06	April 6 / 6 April

The Underlying Principle

Most of these mistakes have the same root: transferring Korean communication patterns directly into English. Korean professional communication tends to be more hedged and deferential in structure. English professional communication in international business tends to reward directness, clarity, and specificity.

The goal is not to be blunt — it is to be clear. You can be warm and professional while also being specific about what you need and when you need it. That combination is what effective business email looks like in English.

Review your last five business emails against this list. Chances are you will find at least two or three of these patterns. Fix them one email at a time, and the new habits become automatic within a few weeks.