7 Cover Letter Mistakes That Get You Deleted in Under 10 Seconds
Hiring managers aren't reading your cover letter. They're scanning it, and their brain is trained to spot certain patterns that trigger an immediate no before they've consciously decided anything. Here's what those patterns are, and how to fix them.
Why Cover Letters Get Rejected Fast
A hiring manager with 200 applications doesn't read every cover letter carefully. They scan. Their brain, honestly, anyone's brain after reviewing dozens of applications, starts to recognize patterns that say "this is the same as the last 30 I read." When it spots one, it moves on.
These 7 mistakes are the ones that trigger that response most reliably. Fix them and your letter immediately stands out from roughly 80% of what lands in a hiring manager's inbox.
Mistake 1: Starting With "I Am Writing To..."
This is the most common cover letter opener in existence. And it tells the reader absolutely nothing: they posted the job, you applied, of course you're writing to express your interest. It's like introducing yourself at a party by saying "I have arrived."
The fix is simple. Start with something specific. A result you've achieved, something you noticed about the company, a one-line description of what you do. Anything that's actually yours and couldn't appear in anyone else's letter.
Mistake 2: Restating Your Resume
The cover letter isn't a second resume. Hiring managers read your resume first, so if your cover letter just repeats the same information in slightly different words, they'll stop reading it immediately. It offers nothing new, and they're busy.
Your cover letter should add context. Explain why a specific experience matters for this role. Give a number that didn't fit in the resume. Tell them why this company in particular, not just any company in the industry.
Mistake 3: Writing Too Much
Long cover letters signal that you don't know what matters. If you can't edit yourself down to three short paragraphs, you haven't thought hard enough about what's actually relevant, and hiring managers can feel that.
Three paragraphs. That's the target. Hook, proof, close. Under 250 words. If you're over that, start cutting. Remove any sentence that contains the phrase "I believe" or "I feel". Those are almost always padding.
Short is hard. Do it anyway.
Mistake 4: Talking About What the Job Offers You
"This role would be a great opportunity for me to develop my skills in..." Nope. The hiring manager doesn't care what this job does for your career. They care what you do for their team. That's the whole transaction.
Flip every sentence that's about your benefit and make it about their problem. "I want to grow in X" becomes "I've spent three years building X and I can bring that directly to your team." Same idea, completely different impact.
Mistake 5: Generic Compliments About the Company
"I have long admired your company's innovative approach and commitment to excellence." What does that even mean? Nothing. And hiring managers can tell, instantly, that it's been pasted from a template.
If you're going to mention the company specifically, and you should, make it real. Name a product. Reference something they published. Mention a decision they made that you thought was smart. Anything that proves you actually looked at who they are before you applied.
Mistake 6: Passive Voice Throughout
"The project was completed under my supervision", by who? "Revenue was increased by 40%", who increased it? Passive voice buries you. It makes you sound like an observer, not the person who actually did the work.
Rewrite every passive sentence. "I led the project" instead of "the project was led." "I grew revenue 40%" instead of "revenue was increased." Active voice is more confident, more readable, and takes fewer words. All three are advantages.
Mistake 7: A Weak or Begging Close
"I hope you'll consider my application" is not a close. It's a wish. And "I would be incredibly grateful for the opportunity to interview" puts the hiring manager in the position of doing you a favor, which is exactly the wrong dynamic to set up.
A good close is direct and confident. "I'd love to talk through how my background in X fits what you're building. Happy to set up a call." That's it. It treats the conversation as a normal business interaction between two people, not a supplication.
Want a full guide on structuring your cover letter properly? Read our article on how to write a cover letter that gets read.
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