MBOX to JSONL Converter
Stream complete MBOX message metadata to JSONL or CSV while preserving duplicate headers and neutralizing spreadsheet formulas.
コンテンツの無効性/アクティブ・リモート
HTML is reduced to plain text. Remote images, CSS, links, tracking pixels, scripts, macros, attachments, and S/MIME content are never fetched or executed. Unknown attachments are download-only.
悪いメッセージが明らかになる。
Header, date, duplicate-header, transfer-encoding, missing-boundary, and MBOX dialect normalization can be imperfect. Defects are shown, and undecodable parts are available only through an explicit raw export.