Load the .eml or .msg file: it is read on your device.
You see sender, recipients, date and the body of the message.
Save one attachment at a time, or all of them together in a single .zip archive.
The file does not leave your device. Thirty-two tools out of thirty-eight.
Yes: you open the message and recover its attachments, including the original message inside the envelope. It is the case this tool gets used for most often.
No: it is read in the browser, on your device, and is not uploaded to Plicum servers. Since it is usually correspondence, that is the point that matters most.
You can save the message as a PDF and then treat it like any other document: merge it into a case file, number it, sign it.
It opens in your browser, nothing to install. Five operations a day are free, with no payment details.