Guide · Applications

How to email a potential PhD supervisor

Updated 18 October 2026 · Practical writing guide · Always follow the instructions in the call

In many countries, an email to a possible supervisor is the first step towards a PhD. This is especially true for individual (“apprenticeship-model”) doctorates, like many in Germany, where you need a professor to agree to supervise you before you can apply for admission or funding. The DAAD’s leaflet How to Find a German PhD Supervisor says most successful research collaborations begin with a personal contact. This guide covers when to write, the subject line, a short structure, a sample email you can adapt, when to follow up, and the mistakes that get emails deleted.

When to email (and when not to)

Email first when:

• the system expects it. For individual doctorates you usually need a supervisor’s agreement before you apply for admission or funding. Some DAAD research grants, for example, need written confirmation of supervision.
• an advert names a contact person and invites informal questions before the deadline.
• you want to apply for your own funding (a scholarship or fellowship) and need a host who agrees to supervise you.

Don’t email first when the call explicitly says enquiries should go through the portal or the programme office, or that the group does not answer individual emails before selection. This is common in structured graduate schools and cohort programmes. Follow the instructions in the call.

Timing matters too. Write early enough that the supervisor can reply, talk to you and, if needed, write a letter before your deadline. Several weeks before is a reasonable minimum; months is better for scholarship applications. Avoid writing two days before a deadline and asking for an urgent reply.

The subject line

Make it specific and easy to scan in a full inbox. Name what you want and your topic, and add the vacancy code if there is one:

• Prospective PhD applicant: [your topic] – [vacancy code, if any]
• PhD supervision enquiry: [method] for [research problem]
• Application for [exact position title] – question about [specific point]

Avoid vague subjects like “PhD opportunity”, “Request” or “Dear Sir”, and don’t write in all caps.

A short structure (about 150–250 words)

Supervisors get a lot of these emails. A short email that is clearly about their research is more likely to be read in full.

1. Who you are (1–2 sentences)

Your current or most recent degree, institution and thesis topic. Mention a vacancy code if there is one.

2. Why them (2–3 sentences)

Name one or two specific papers, projects or grants from the group, and say which question in that work connects to your experience. This is the part that shows you didn’t send the same email to everyone.

3. What you bring (2–3 sentences)

Concrete evidence: methods, datasets, instruments, code, a thesis result or a publication. Use numbers only where they are true.

4. The ask (1–2 sentences)

One clear question: are they taking students for [start date], is the advertised position still open, or could you have a short call. Mention funding honestly: whether you are applying to an advertised funded post or for a named scholarship.

5. Close

Say what you have attached, and sign off with your full name, a link to your profile and your time zone if it matters for a call.

Sample template (replace every bracket)

Use this only as a starting point. An email that still reads like a template will be ignored.

For the longer letter that usually follows, see our PhD motivation letter guide.

Attachments and links

• Attach a CV as a PDF with a clear name like Surname_CV.pdf.
• If it suits the field or the funding route, add a short (about one page) research summary or proposal. Scholarship applications with your own project often need one.
• Don’t send large bundles of transcripts and certificates in the first email unless they are asked for.
• Link to your thesis, preprints or code instead of attaching big files.

Follow-up timing

Professors are busy, and there is no fixed rule for how long to wait. A common approach is to send one polite follow-up after about one to two weeks, as a reply in the same thread so the context is kept. Keep it to two or three lines, and add something new if you can (e.g. “my preprint is now online”).

If you still get no answer after the follow-up, take that as a no for now and move on. Don’t send repeated reminders, and don’t write to other group members at the same time without saying so. If an advert gives a deadline, apply through the official channel anyway; a reply to your email is rarely required.

If they reply positively, answer within a day or two, suggest specific times for a call, and prepare for it like an interview: their recent papers, your thesis in five minutes, and two or three questions about the project and funding.

Mistakes to avoid

• Mass emails. Using the same text for dozens of professors, or putting several in the To or CC field.
• The wrong name or title. Check spelling and academic title. Never write “Dear Sir/Madam” to a named person.
• Praise without anything specific. “I am deeply inspired by your esteemed work” says nothing. Name the paper and the question.
• Leading with funding or visas. Be clear about how you plan to be funded, but don’t make your first question “Can you pay me?”
• Long life stories. Keep it short. Your CV covers the background.
• Exaggerating. Don’t invent publications, grades or skills. They will be checked.
• Ignoring the call. If the advert says “apply only via the portal”, an email first can count against you.
• Unprofessional details. A casual email address, no signature, or attachments named final_v3(2).pdf.

FAQ

Should I email a professor before applying for a PhD?

Often yes for individual doctorates, where you need a professor to agree to supervise you before you apply for admission or funding. For structured programmes and advertised posts, follow the call: if it says to send enquiries only through the portal, don’t email first.

How long should the email be?

Short: roughly 150–250 words. Say who you are, why their specific research fits your experience, what evidence you bring, and one clear question. Attach your CV as a PDF.

What subject line should I use?

Something specific, such as “Prospective PhD applicant: [topic] – [vacancy code]”. Avoid vague subjects like “PhD opportunity” or “Request”.

When should I follow up if there is no reply?

There is no fixed rule. A common approach is one polite follow-up in the same thread after about one to two weeks. If there is still no reply, move on and apply through the official channel if there is an open call.

Should I ask about funding in the first email?

Be clear about how you plan to be funded, whether through an advertised funded position or a named scholarship, but don’t lead with a request for money. Focus the email on why the research fits.

Sources

• DAAD — How to Find a German PhD Supervisor or Research Partner (PDF)
• DAAD — How to find your PhD position in Germany
• DAAD — PhDGermany database