Cold Emails: How to Write Your First Email to a Japanese Professor

The goal of a cold email isn't to get the professor to agree to supervise you on the spot. It's to earn a chance for further conversation (a Zoom meeting, a suggestion to submit an application, an introduction to lab members, and so on). So keep the information density high, stay formal in tone, and don't oversell yourself.

When to Send

• Eight to ten months before the application deadline is the standard rhythm. Too early and the professor won't remember you; too late and there's no room left in their schedule.
• Most Japanese universities begin in April and October, so the corresponding cold-email windows are roughly June–September of the prior year and December–February of the following year.
• Avoid late February (entrance exams cluster here), late March (fiscal year-end), and the Obon period in early-to-mid August—reply rates drop noticeably during these times.

Email Structure (a Template You Can Use)

1. Subject: 大学院進学に関するご相談 (consultation about graduate study), plus your surname and affiliation. Keep it short and formal—no exclamation marks.
2. Greeting: 「突然のご連絡失礼いたします」(apologies for the sudden contact), plus a one-line self-introduction (university / major / year).
3. Research connection: in 1–2 sentences, state clearly which paper or direction interests you and why.
4. Your research plans: summarize the core of your research proposal in 2–3 sentences, and avoid pasting in long text.
5. Specific request: state it plainly—「事前相談できないでしょうか」(could we have a preliminary consultation?) or 「研究生としての受入れ可能性について伺えればと存じます」(I would appreciate hearing about the possibility of being accepted as a research student).
6. Closing: attach your résumé PDF plus your research proposal PDF (if you have one), no more than two attachments.

Common Pitfalls

• BCC-ing several professors with an identical subject line: the mass-mailing is obvious, and you'll almost never get a reply.
• Pasting your résumé into the body instead of making it a PDF: it reads poorly.
• Asking straight away about "lab headcount / scholarships / dorms" while skipping the research itself: the order is backwards.
• Translating literally from a Chinese mindset: "I deeply long to join your lab" comes across as too effusive—formal Japanese style simply doesn't use this kind of phrasing.
• Following up within a week: Japanese professors normally reply within 1–2 weeks, so don't chase too aggressively.

What to Do After They Reply

• If they agree to a preliminary consultation: reply with thanks immediately, propose three alternative times, and confirm whether you should submit a draft of your research proposal first.
• If they write back saying "this lab isn't accepting international students right now / we're already full": thank them, close politely and briefly, and don't ask back "why?"
• If there's no reply after two weeks: you may send one short follow-up inquiry (「先日のメールが届いているかご確認いただければ幸いです」—I'd be grateful if you could check whether my earlier email arrived). Follow up only once.