Do you even need a cover letter?
When a posting lists it as optional, a short, well-written letter still helps — some recruiters read them, and they matter most for career changes, competitive roles, and nonprofits. When it's listed as required, write one. Always tailor it; a generic letter is worse than none, because it proves you didn't read the posting.
Two exceptions: if the application form has no field for a letter and no email address, don't force one into a resume upload box; if a recruiter explicitly says "no cover letters," believe them and skip it.
Before you write: ten minutes of research
You need three facts, and all three are usually on the company site or the posting itself:
- Who reads it. A named hiring manager, a recruiter, or a small team. LinkedIn will tell you who holds the role you'd report to.
- What the role is measured on. The first three requirements in the posting are usually the real ones; the rest is a wish list.
- One specific detail about the company. A product launch, a stated operating principle, a market they just entered — something that would not fit every other employer in the industry.
The four-paragraph structure
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Opening — who you are and what you're applying for
Name the exact role and one compelling reason you fit. No "To Whom It May Concern" — find the hiring manager's name, or open with "Dear Hiring Team." Keep it to three sentences.
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Proof — your most relevant achievement
Pick one or two accomplishments from your resume and expand on them with context. Don't repeat bullet points verbatim; explain the situation, the decision you made, and what changed as a result.
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Fit — why this company, this role
Reference something specific: a product, mission, recent launch, or requirement from the posting. This paragraph separates tailored letters from mass-mailed ones.
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Close — a confident, simple sign-off
Thank them and state that you'd welcome a conversation. Avoid "I look forward to hearing from you at your earliest convenience" — it's filler. One sentence is enough.
Sample 1: Career professional
Sample 2: Student / new graduate
Sample 3: The short email version
Many applications arrive by email or through a recruiter who forwards your note. In that case, put the letter in the message body and skip the address block — five sentences is plenty:
Common mistakes that sink a letter
- Repeating the resume. The letter should add context and motive, not restate bullets. If a sentence could be copied into your resume unchanged, cut it.
- Praising the company instead of connecting to it. "Your innovative culture" says nothing. "Your team moved to a usage-based pricing model last spring, which is the same transition I ran at Mercantile" says you did the reading.
- Opening with "I am writing to apply for…" It's not wrong, just wasted. Start with the role and your strongest relevant fact in the same sentence.
- Apologizing. "I know I don't have direct experience, but…" hands the reader a reason to stop. State what you do have and let them judge.
- Length creep. Four paragraphs, roughly 250–350 words. If it spills to a second page, the reader skims and your best paragraph gets lost.
Format and file logistics
Use the same header as your resume — same font, same contact line — so the two documents look like a set. Save as PDF named Firstname-Lastname-Cover-Letter.pdf. If you're pasting into an application text box, check that line breaks survived.
After you send it
Wait five to seven business days before following up once, by email, in two sentences: restate the role, restate your interest, offer to answer questions. Don't follow up on a portal application with no named contact — there is no one to reply. If you interviewed and haven't heard back within the timeline they gave you, a short note to your interviewer is appropriate.