Why your AI-translated email to a Japanese company gets no reply

You wrote a clear, polite email. You ran it through a good translation engine — the output looked fluent, and when you translated it back it came out fine. You sent it to thirty Japanese companies. You got nothing. Not rejections. Nothing.

The usual explanation offered is that Japanese companies are slow, or conservative, or reluctant to work with foreigners. In our experience that is rarely what happened. What happened is that your email was legible as a translation, and a translated cold email in Japanese reads the way an obviously templated cold email reads in English — except with fewer social permissions to reply anyway.

This article is about what specifically gives it away, because the failures are surprisingly consistent and none of them are about grammar.

Is machine translation into Japanese actually bad now?

No, and that is the problem. The grammar is fine. The vocabulary is fine. What translation cannot do is make the choices that Japanese business writing requires you to make.

English business writing is broadly one register. You adjust warmth a little, but “Dear Mr Tanaka, I’m writing to introduce our product” works whether Tanaka is a junior buyer or a company president, whether you have met or not.

Japanese does not work that way. Before you can write the first line, the language forces you to have decided how formal to be, whether this is a first contact or a continuation, whether you are positioning yourself as a supplicant or a peer, and whether this is a written or a spoken context. A translation engine has no view on any of that. It picks defaults. The defaults are what read as machine-generated.

What is the single clearest giveaway?

Using 御社 in writing, or 貴社 in speech.

Both mean “your company”. The distinction is medium, not politeness: 貴社 (kisha) is the written form and 御社 (onsha) is the spoken form. In a formal written email to a company you have not met, 貴社 is correct.

Translation tools have no concept of “this string will be read rather than heard”, so they produce whichever their training favoured. A Japanese recipient does not consciously think “wrong register marker”. They think, without articulating it, that this was not written by someone who writes Japanese business email. Once that impression lands, the rest of the message is read differently.

The same applies to the pair 弊社 and 当社 for “our company” — 弊社 is humble and appropriate outward-facing, 当社 is neutral and reads oddly in a first approach to a prospective customer.

What does a Japanese business email actually look like?

It has a fixed skeleton, and skipping any part of it is conspicuous.

1. Recipient block. Company name in full, including 株式会社 in the correct position. Then department, then title, then personal name followed by 様. Abbreviating the company name in a first contact is a small discourtesy that gets noticed.
2. Opening formula. A set phrase. To a company you have not dealt with, 突然のご連絡失礼いたします — an apology for contacting them out of the blue. To an existing contact, いつもお世話になっております. Using the second one on a first approach is a common machine-translation artefact and reads as either careless or falsely familiar.
3. Self-introduction. Your company, then your department, then your name. In that order. English convention puts the person first and the company last; reversing it is one of the most visible tells.
4. Purpose, stated briefly. One or two sentences on why you are writing.
5. Detail. The substance.
6. Request. What you would like to happen next, phrased as a request rather than a proposal of terms.
7. Closing formula and signature block. A set phrase, then a full signature with company, address and phone number.

A translated English email usually arrives with items 2, 3 and 7 missing or mangled, because the English original never had them. The engine translates what you wrote. It does not add the parts Japanese requires and English does not.

Why does the signature block matter so much?

Because it is where a Japanese recipient checks whether you are real, and a missing telephone number is read as an unwillingness to be contacted.

A standard Japanese business signature carries company name, postal code and full address, telephone number, the sender’s department and name, and often a fax number. Foreign senders routinely include a name, a title and a website — which in Japanese business context looks like a deliberately thin identity. If you have a Japanese phone number, put it in. If you do not, that absence is itself a reason the message underperforms.

Are you writing to the right person at all?

Often not, and this compounds the language problem.

Decisions at Japanese companies are generally not made by the person who receives your email. The prevailing pattern — ringi — is that a proposal is circulated internally and approved by consensus before anyone commits. What this means for you is that your recipient’s real question is not “do I want this?” but “am I willing to carry this internally?”

That changes what a good email contains. A message optimised to excite an individual decision-maker performs badly. A message that gives your recipient a clean, complete, low-risk package they could forward to three colleagues performs well. Specificity, evidence, and a modest next step beat enthusiasm and urgency.

It also means a generic info@ address is usually the worst possible target. Nobody at a Japanese company owns that inbox, and nobody’s job description includes championing an unsolicited foreign proposal that arrived in it.

What about tone — is more polite always better?

No. Excessive honorifics are their own tell.

Translation output sometimes overshoots into very elaborate 敬語, apparently on the theory that Japanese is a formal language so more formality is safer. The effect on a native reader is not “very polite”. It is closer to reading a letter written by someone using a phrasebook — technically deferential, subtly wrong, and impossible to respond to naturally.

The target is ordinary, competent business Japanese: correct forms, standard phrases, no flourishes. That register is very hard to reach by translation and very easy for a native speaker to produce.

Does any of this apply if I write in English?

Yes, and honestly, plain English is often the better choice of the two.

If your alternative is machine-translated Japanese, a clear, simple English email is frequently the stronger option. It is honest about what you are — a foreign company — and many Japanese firms, particularly those with any export activity, have someone who reads English. What it will not do is reach the companies without that capability, which in most categories is the majority.

The worst outcome is the middle one: Japanese that is fluent enough to look native and wrong enough to feel synthetic. That is where the reader concludes there is nobody Japanese-speaking behind this and the relationship would be hard work.

So what actually works?

Fewer emails, written properly, to named people, followed up by telephone.

Concretely, the approach that produces replies looks like this: identify a specific department at a specific company rather than a general inbox; write in correct business Japanese with the full skeleton and a complete signature; keep the ask small — a short online meeting, not a distribution agreement; and follow up by phone to the main switchboard rather than by second email.

Twenty of those outperform two hundred translated messages, and it is not close. The reason is not that Japanese companies dislike foreign approaches. It is that the twenty are legible as a serious proposition from a real organisation, and the two hundred are not.

When should you hand this over?

When the reply rate is the constraint, which is usually from the first campaign onwards.

You can solve this by hiring a Japanese-speaking employee, by finding a distributor who does the approaching for you, or by having a Japanese company do the outreach on your behalf. All three work. The third is the fastest and, at the volumes most companies need, the cheapest.

Our buyer and distributor discovery service covers exactly this: your materials adapted into Japanese by native speakers rather than translated, approaches to named companies, follow-up by telephone to the main switchboard, and every reply translated back to you — including the refusals, which are usually the most informative part. If you would rather keep outreach in-house but need Japanese-language hands, the Japan Desk assistant does the writing and the calling to your instructions.