MIME decoder
Raw email is transport packaging: quoted-printable escapes, base64 walls, boundary separators. Paste a message and this tool unpacks it — every MIME part decoded to readable text, encoded-word headers (that =?utf-8?B?…?= subject) unwrapped, attachments listed and downloadable — all locally in your browser.
Runs entirely in your browser — nothing is uploaded, attachments are decoded locally and only saved when you click Download.
What each part shows
- Part header — MIME type, charset and transfer encoding, so you know what you are looking at.
- Decoded text — text/plain and text/html parts with their actual content; quoted-printable and base64 are reversed, UTF-8 and common charsets handled.
- Attachments — file name, decoded size and a download button. Treat downloaded attachments exactly as you would in a mail client: do not open executables.
A natural pairing: preview a decoded HTML part safely, or analyze the same message's headers.