Cover Letter Mistakes That Get You Rejected

A weak cover letter rarely "fails ATS." It fails the human who opens it for ten seconds and closes the tab.

Mistakes that get letters ignored

1. Swap-the-company templates. If the paragraph still works after changing the company name, it is not tailored.

2. Resume dumps. The letter is not a second resume. Pick one or two proofs tied to this posting.

3. Mission-statement poetry. Passion claims without proof waste the skim.

4. Wrong or missing role title. Signals you did not read the posting.

5. Ignoring "no cover letter" instructions. Extra files can look careless when the employer asked you not to attach one.

6. Unedited AI fluff. Vague verbs, buzzword salad, and no numbers read as spam.

What good looks like instead

• 200 to 350 words
• Role and company named once
• One concrete proof with a metric when you have one
• A clear, polite close

Quick fix workflow

1. Highlight three must-haves in the JD
2. Map one proof from your resume to each (or skip the letter if you have nothing new)
3. Draft, then cut every sentence that does not earn its place
4. Read aloud once for tone

Tools that help without taking over

Use a cover letter generator for a starting draft, then edit. Pair with how to write a cover letter and the 2026 refresh.

Avoid the mistakes above and your letter stops being a rejection risk.