What a cover letter is actually for
A cover letter is not a prose version of your resume — the recruiter already has the resume. Its job is to explain why this particular application exists: this role, this company, this piece of evidence. Most letters spend their first sixty words describing enthusiasm, which every other applicant also claims and nobody can check.
Adjectives are free. Anyone can write that they are detail-oriented and passionate about the mission. Numbers are not free: you either cut invoice processing from four days to one, or handled 300 support tickets a month, or you did not. Two or three checkable facts do more work than a full page of confident description.
Length is the other common mistake. Three short paragraphs, around 200 words, is enough for a hiring manager reading forty applications between meetings. If a draft runs past 350 words, the extra is almost always the resume restated, and that is exactly the part that gets skimmed.
The three paragraphs and what each one does
The opening names the role as it appears in the posting and says where you saw it — Naukri, LinkedIn, the company careers page, or a referral. This sounds trivial, but a company running four openings at once cannot place an application that only mentions the marketing role, and a referrer's name in the first line changes who reads the rest.
The middle proves one claim, not five. Pick the requirement from the posting you can genuinely evidence, then give the situation, what you did and what changed: month-end close from nine days to four, or a channel taken from 2,000 to 18,000 subscribers in a year. One proved claim outweighs five asserted ones.
The close proposes a specific next step. Ending on a hope of hearing back leaves all the effort with the recruiter. Say the thing that removes friction instead — a fifteen-minute call this week, a link to work you can talk through, or a thirty-day notice period if the posting hints at an urgent start.
What the builder does and does not do
There is no language model here. The tool is a set of slots — role, company, source, the requirement you are answering, your evidence, your close — and the sentences are assembled from what you type. That is a deliberate limit: nothing gets invented, and you cannot end up claiming a certification or a stint you never had.
It also means the draft is a first draft. Read it back in your own voice and change anything that sounds unlike you — assembled sentences are grammatical, not personal. The lines worth rewriting by hand are usually the joins between paragraphs; the facts underneath them are already yours.
Applying to twelve roles does not mean writing twelve letters from nothing. Your evidence paragraph is stable; the opening and the requirement you answer change with each posting. Keep two or three evidence paragraphs on file, pick whichever sits closest to the job description, and an application takes ten minutes instead of an hour.