A letter of interest for an internship is a short, proactive message you send to a company that hasn’t posted an internship opening, explaining who you are, what you can contribute, and why you want to work there. Unlike a cover letter, which responds to a specific job listing, a letter of interest creates an opportunity where none existed. It works especially well with smaller firms, startups, and teams in growth mode, where intern roles are often created informally rather than posted on a job board.
What Makes This Different From a Cover Letter
A cover letter responds to an active posting. You reference a job title, match your experience to listed requirements, and attach your resume. A letter of interest flips that dynamic. You’re reaching out cold, so you don’t have a job description to mirror. Instead, the focus shifts entirely to what you can contribute, which skills you bring, and why this company specifically appeals to you. A resume isn’t required, though you can offer to send one.
This distinction matters because it changes your tone and strategy. You’re not checking boxes from a posting. You’re making a case that bringing you on would be worth someone’s time, even if they hadn’t planned to hire an intern.
Find the Right Person to Contact
Addressing your letter “To Whom It May Concern” signals that you didn’t bother researching the company. Take the time to find a specific person, ideally the head of the department you’d want to work in or the hiring manager for that team.
LinkedIn is the fastest route. Search the company name plus keywords that describe the likely title of the person who’d oversee your work. Filter results to “People” and narrow by “Current Company” so you only see active employees. If LinkedIn doesn’t turn up the right name, call the company’s main number. You can say something like, “I’m reaching out about an internship opportunity and want to make sure I’m directing my note to the right person. Could you tell me who heads the marketing department?” Receptionists and department assistants are often happy to help.
Structure Your Letter in Four Parts
Header
If you’re sending a physical letter or attaching a PDF, include your full name, email, phone number, and the date at the top, followed by the recipient’s name, title, and company address. If you’re sending this as an email, your contact info goes in a simple email signature instead.
Opening Paragraph
Your first sentence is the most important one. Do not start with “I am writing to express my interest in an internship.” That sentence tells someone you’re writing to tell them you’re writing. It wastes their time and yours. Instead, lead with something specific: a recent project the company launched that caught your attention, a skill you have that connects to their work, or a brief, concrete statement of what you’d bring to the team. Put the interesting part first. If there’s a fascinating reason you’re drawn to this company, that’s your opening line, not something buried in paragraph three.
Body Paragraphs
One or two paragraphs in the middle should accomplish two things: show that you understand what the company does, and demonstrate that your skills align with their goals. Be specific. Instead of calling yourself a “dynamic, hard-working team player,” describe something you’ve actually done. If you managed social media for a campus organization and grew its following, say that. If you analyzed data for a class project and produced findings that surprised your professor, describe the result. Concrete examples beat abstract self-praise every time.
A critical mistake students make here is focusing on what the internship would do for them. Sentences like “This internship would allow me to develop skills and explore my career interests” center your benefit, not the employer’s. Flip the framing. Instead of explaining what you’d gain, explain what you’d contribute. What problem could you help solve? What workload could you absorb? What perspective or skill do you bring that their current team might lack?
Closing Paragraph
End with a clear, specific next step. Ask if they’d be open to a brief phone call or coffee chat to discuss potential opportunities. Offering to send your resume or portfolio gives them an easy way to continue the conversation without committing to anything. Close with a simple thank-you: “Thank you for your time. I’d love the chance to connect and learn more about how I could contribute to your team.”
Write a Subject Line That Gets Opened
If you’re sending this as an email, the subject line determines whether anyone reads it. Keep it short, specific, and professional. A strong format names your school or year, your area of interest, and the company. For example: “Junior marketing student interested in opportunities at [Company Name]” or “Sophomore with data analysis experience seeking internship at [Company Name].” Avoid vague lines like “Internship Inquiry” or “Looking for Opportunities,” which could come from anyone and say nothing.
Tone and Language That Works
Write like a professional, but not like a thesaurus. Phrases like “leverage my interdisciplinary skill set” or “synergize cross-functional collaboration” read as filler. Use plain, direct language. If you helped organize an event, say you helped organize an event. If you’re good at writing, show it in the letter itself rather than listing “strong written communication skills” as a bullet point.
Avoid generic praise of the company, too. Telling a firm that you admire their “dedication to innovation and excellence” says nothing because it could apply to any organization. Instead, reference something specific: a product launch, a piece of published work, a community initiative, a client they serve. This proves you’ve done actual research rather than copying a template.
Keep It Short
Three to four paragraphs is the sweet spot. If you’re sending a physical letter, keep it to one page. If you’re sending an email, aim for something that fits on a single screen without scrolling. The person reading this is busy, likely wasn’t expecting your message, and will decide within the first few sentences whether to keep reading. Every sentence should earn its place.
Sample Letter of Interest
Here’s what a strong letter looks like in practice, sent as an email:
Subject: Junior journalism student interested in editorial opportunities at [Company Name]
Dear Ms. Ramirez,
Your team’s recent series on housing affordability was some of the sharpest local reporting I’ve read this year, and it’s exactly the kind of work I want to contribute to. I’m a junior at [University] studying journalism, and I’m reaching out to ask whether your newsroom has room for a summer intern.
This past semester, I reported and produced a five-part audio series on student debt for our campus radio station. I conducted 14 interviews, edited audio in Adobe Audition, and wrote companion web articles that drew over 3,000 page views. Before that, I spent a semester fact-checking feature stories for our university magazine, where I learned to verify claims quickly and flag sourcing gaps before publication.
I’d love to bring that same energy to your editorial team this summer. I’m comfortable with deadline pressure, I can write cleanly on a fast turnaround, and I’m genuinely excited about the topics your newsroom covers. Would you be open to a brief call to discuss whether there’s a fit? I’m happy to send my resume, clips, or both.
Thank you for your time. I look forward to hearing from you.
Best regards,
[Your Name]
[Phone] | [Email]
What to Do After You Send It
If you don’t hear back within a week to ten days, send one polite follow-up. Keep it to two or three sentences: reference your original message, restate your interest briefly, and ask if there’s a better time or person to connect with. If there’s still no response after the follow-up, move on. Some companies simply don’t take unsolicited interns, and silence is their answer. Don’t take it personally, and don’t send a third message.
If you do get a response, treat it like the beginning of a professional relationship. Be prompt, be grateful, and be ready to share your resume or schedule a call quickly. The whole point of a letter of interest is to start a conversation. Once that door opens, your job is to walk through it prepared.