Japanese business email checker for keigo and clarity

What it does

Checks a draft email against a bundled rule list before you send it, and the agent proposes how to fix each problem.

• Doubled honorifics (such as ossharareru, goran ni narareru, haiken sasete itadaku) and humble verbs used for the recipient's action
• Expressions to avoid toward superiors and clients (such as gokurou-sama, ryoukai shimashita, sankou ni narimashita), onsha in writing instead of kisha, and doubled titles with sama or onchuu
• Ra-nuki and sa-ire forms, casual words and machine-dependent characters
• Missing addressee, greeting, self-introduction or closing line, and missing signature
• Overly long sentences and sentences with too many commas
• Dates whose weekday is wrong or missing, times that could be AM or PM, and vague deadlines like next week or as soon as possible

How to use

python scripts/jp_email_check.py draft.txt --recipient superior

Choose the recipient type (client, superior or peer) so only relevant rules apply. The agent lists each finding as original phrase, suggestion and reason, then gives a corrected full draft that keeps your meaning.

Requirements

• Python 3 (standard library only)

Caveats

• This is a pattern-based check, so it can miss problems or flag correct text. You make the final call.
• Forms accepted by convention, such as o-ukagai suru, are not flagged.
• Dates without a year are checked against the current year (or next year if the date would be more than 60 days in the past). Use --year to override.
• Emails are never sent or forwarded.