Most business letters get one quick re-read before sending, and that single pass is not enough to catch the things that make letters land poorly. A five-pass routine takes about twenty minutes for a typical letter and produces a noticeably better draft. The five passes are: structure, specificity, tone, mechanics, and aloud.

The structure pass asks one question: does this letter open with the right thing and close with the right thing? The opening should name the subject and signal the request; the closing should name the next step. If either is buried, move it. Cut any paragraph that does not advance one of those two functions. For a more granular breakdown of the conventions discussed here, see the companion professional drafting reference we maintain alongside this guide.

The specificity pass replaces every vague word with a specific one. Dates, dollar amounts, names, contract clauses, percentages, deadlines, references — anywhere a generic word could be made precise, make it precise. "Soon" becomes "by Friday, March 14." "Some time ago" becomes "in our meeting on January 7." "The relevant party" becomes "the regional director." This pass alone often doubles the credibility of a draft.

The tone pass reads the letter as the recipient. Does the salutation match the relationship? Does the sign-off match the salutation? Does any sentence read as harsher, colder, or more familiar than you intended? Adjust the energy of the letter to match the recipient's expectation. The mechanics pass catches the typos, the inconsistent capitalization, the missing comma in the salutation, the inconsistent number formats. It is the pass most writers do exclusively, and it should be fourth, not first. Practitioners who write in regulated industries may also find our compliance-aware editorial checklist a useful next step.

The aloud pass is the final filter. Read the letter aloud, slowly, the way the recipient might read it. The phrases that sound wrong in your own voice are the ones the recipient will notice. Fix them. Print the letter, sign it, send it.

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