Scientific writing
How Should a Strong Cover Letter Be?
A strong cover letter introduces the manuscript to the editor in a brief, professional, and journal-specific way. It should explain what the manuscript is about, why it is original, why it fits the journal, and why the findings may matter to the journal's readers.
A cover letter should not be long, exaggerated, or overly promotional. Its role is to help the editor quickly understand the value, relevance, and suitability of the submission.
Key components of a strong cover letter
| Section | Purpose |
|---|---|
| Address the Editor | Opens with a direct and professional greeting. |
| Brief Opening | States the manuscript title, article type, and purpose of submission. |
| Novelty / Originality | Explains what is new or important about the study. |
| Fit with the Journal | Shows why the manuscript is suitable for that specific journal. |
| Scientific / Clinical Importance | Briefly explains why the findings matter. |
| Ethical Declarations | Includes originality, exclusive submission, author approval, and ethics statements. |
| Conflict of Interest / Funding | Transparently reports conflicts or financial support, if any. |
| Brief Professional Tone | Avoids exaggeration, flattery, or defensive language. |
| Polite Closing | Ends with a short, respectful, professional closing. |
Weak vs strong cover letters
Weak cover letters
- Too long and unfocused
- Do not explain why the journal is appropriate
- Fail to state the manuscript's contribution
- Use generic, copy-paste language
- Omit ethical declarations
- End with a vague or weak closing
Strong cover letters
- Brief and focused
- Clearly explain the manuscript's contribution
- Show a specific fit with the journal
- Include key ethical declarations
- Use a calm and professional tone
- Close clearly and respectfully
Core message
A strong cover letter should answer:
- What is being submitted?
- What is new or important about the study?
- Why does it fit this journal?
- Why should the editor and readers care?
- Are the ethical and disclosure statements clear?
In short
A strong cover letter does not need to be long — it should be brief, original, journal-specific, and professional.
Strengthen the manuscript first with a pre-submission review, then draft your cover letter; see our peer review process guide for what happens next.
Check your manuscript before you write the cover letter
Make sure what you claim in the letter matches what reviewers will see in the manuscript.
Evaluate your manuscript