How to write a subject line that opens doors
Learn how to write the first three lines of your unsolicited email so that the recruiter actually reads on.
You have found the right company, looked up who is responsible for recruitment, and written a personal letter. Then you hit send – and hope. But the truth is that most unsolicited emails are never opened, or are thrown away after a few seconds. What decides is not the whole email, but the first three lines: the subject line, the greeting, and the first sentence.
Recruiters and managers receive loads of emails every day. They scan quickly, often on their phone, and decide in a few seconds whether something is worth opening. Therefore, your unsolicited email must be on target from the very first character. Here's how to do it – without being too salesy or pushy.
The subject line: your only chance to be opened
The subject line is the first thing a recipient sees – often along with your name and date. It must say three things: who you are, what you want, and why this particular company. A good subject line is concrete, personal, and short. Avoid words like 'Spontaneous application' or 'Job application' – they say nothing about you and disappear in the crowd.
Instead, think: 'Experienced project manager seeking development role at your company' or 'Have followed your sustainability work – want to contribute as a marketer'. Always adapt to the company and your background. If you have a contact who recommended you, mention the name directly in the subject line – it significantly increases the chance that the email will be opened.
Be specific – mention your role and industry.
Connect to the company's operations or current projects.
Keep it under 60 characters, otherwise the line gets cut off on mobile.
The greeting: personal but not familiar
Start with the recipient's name – it shows that you have done your research. 'Hi Anna' is better than 'Hi' or 'To whom it may concern'. If you can't find a name, try again. Check LinkedIn, the company's website, or call the switchboard. Emailing 'Hi recruiter' signals that you haven't made an effort.
Avoid writing 'Hi Anna, how are you?' – it becomes too intimate in a first email. Keep the tone professional but friendly: 'Hi Anna, my name is Sara and I am an engineer with five years of experience in product development.' The greeting is not the place to ask anything – it should only establish contact.
The first sentence: capture interest immediately
After the greeting, you have one to two sentences before the reader decides. Open with the most important thing: why you are contacting them and what you can contribute. Avoid starting with 'I want to apply for...' – it focuses on you, not the company's needs.
A strong opening could be: 'I have followed your work with electrified trucks and see that you are expanding in the Nordic region. With my background in electrical power and systems development, I believe I can contribute directly to your team.' Note that you connect to their operations and show what you have to offer – without selling too hard.
Mention something specific about the company – a news item, a project, or a product.
Connect your skills to their needs, not the other way around.
Avoid saying 'I think I would be a good fit' – show it instead.
Three lines that do the whole job – an example
Here is what a complete email can look like when the first three lines are in place: 'Hi Maria, I am a systems developer focused on AI and have read about your new initiative in automated logistics. I have built similar solutions before and would love to tell you more about what I can contribute.' After that follows a short presentation of your experience and a request for a meeting. But the three lines are what open the door – the rest is details.
Remember that the email should be short. If you write more than three to four paragraphs, you risk the reader losing interest. Stick to the most important things and save the details for a possible meeting. Your goal is not to tell everything – your goal is to get a chance to tell more.
How to avoid nagging in your follow-up
If you don't get a response within a reasonable time – depending on the industry, but often around one to two weeks – send a short reminder. A good follow-up is polite, concrete, and gives the recipient a way out: 'Hi Maria, I just wanted to check if you had time to look at my email. I understand if you are busy – feel free to get in touch if you want to know more.'
Send a maximum of two follow-ups and respect a no or silence after that. Calling can be a good alternative, but don't do it too often. Remember that your task is to be helpful and interesting – not pushy. By focusing on what you can contribute, and being humble in your follow-up, you show that you are a person who is easy to collaborate with. And that is exactly what opens the next door.