MBOX Viewer

Open an MBOX archive without a mail client and review bounded plain-text message previews, headers, MIME parts, attachments, and parser defects.

Choose a user-supplied MBOX file up to 1 GB. It is parsed locally on a Convertr worker and is never sent, searched, or connected to an account.

No active or remote content

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.

Malformed mail stays explicit

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.