9 Cover Letter Mistakes That Get Applications Rejected Instantly

1. Restating the resume

The single most common mistake. If every sentence in your cover letter could be lifted and pasted into your resume's bullet points, it's not doing a cover letter's job. A cover letter should explain why — why this role, why you, why now — not repeat what the resume already lists. See our guide on what each document is actually for for the fix.

2. Opening with "I am writing to express my interest in..."

This opener is so common it's functionally invisible — hiring managers have read it thousands of times and stopped registering it as content. It also delays the one thing that matters most: proving you read the specific posting. Open with something specific instead — a product, a detail from the job description, a reason this role in particular.

3. Wrong company name

This happens more than you'd think, usually from copy-pasting a letter between applications and forgetting to update every mention. It's an instant, disqualifying signal that the application is a mass-send, not a genuine one — exactly the cheap signal a hiring manager is filtering for. Always do one final read specifically checking every proper noun before sending.

4. Talking about what you want instead of what you offer

"This role would be a great opportunity for me to grow my skills in..." tells the reader what's in it for you. They're hiring to solve a problem, not to fund your development. Reframe every sentence in terms of what you bring, not what you'll get.

5. Empty buzzwords with no evidence

"Passionate," "results-driven," "team player," "detail-oriented" — these words carry zero information on their own because everyone uses them and none of them are falsifiable. A claim without a specific, backing example is worse than no claim at all; it signals you don't have a real example to offer. Replace every adjective with a concrete instance.

6. Letters that are too long

Cover letters over 400–500 words don't get read in full — they get skimmed, and the parts that matter most (the opening and the ask) get buried. Aim for 3–4 short paragraphs, under 350 words total. If you can't fit your case in that space, you're including things that don't need to be there.

7. Apologizing for gaps or missing qualifications

Never write "I don't have direct experience in X, but..." You've just planted a doubt the reader might not have had, and framed the rest of your pitch as compensating for a weakness instead of making a case. If you're missing a listed qualification, say nothing about it and lead with what you do have.

8. No specific reason for wanting this company

"I would love to work at a company like yours" is a sentence that fits every company simultaneously, which means it convinces none of them. If you can't name one specific, real reason you want to work at this particular company — a product, a mission, a team, something concrete — the letter reads as a mass application no matter how well the rest is written.

9. A weak, vague close

Letters that trail off with "I look forward to hearing from you" waste the last impression. Close with something specific and confident — a direct reference to what you'd bring to a particular part of the role, and a clear, simple ask for the conversation.

The pattern behind all nine

Every mistake on this list comes down to the same root cause: writing something generic enough to send to any company, for any role. The fix for all nine is the same instinct — before sending, ask whether this exact letter could go to a different company with just the name swapped. If yes, it needs another pass.

QuickCover generates a first draft grounded in the specific job description you paste in, which avoids most of these by default — but the two-minute human pass matters regardless of what tool you use. Read it once specifically checking for these nine before you hit send.