proton mail protected

Every command under proton mail protected, with the arguments and flags it takes. For these commands in use, see the mail guide.

Holds attachments, get and reply.

attachments

Files attached to a password-protected message.

Holds download and list.

attachments download

Download and decrypt attachments.

Naming an attachment downloads that one; naming none downloads them all. Existing files are never overwritten silently: a collision becomes “file (2).pdf” unless –force says otherwise.

proton mail protected attachments download LINK [ATTACHMENT_REF]

proton mail protected attachments download 9fK2pQ7xNv4mB8 --eo-password-file /run/secrets/jane --dest-dir .
proton mail protected attachments download 9fK2pQ7xNv4mB8 q3-report.pdf --eo-password-file /run/secrets/jane --dest report.pdf

Flag	Description
--dest string	Write to this path, or - for stdout
--dest-dir string	Write into this directory, keeping each item’s own name
--eo-password-file string	Read the password for recipients outside Proton from a file, or - for stdin
--force	Overwrite a file that already exists
--include-inline	Include inline attachments when downloading them all

attachments list

List a password-protected message’s attachments.

proton mail protected attachments list LINK

proton mail protected attachments list 9fK2pQ7xNv4mB8 --eo-password-file /run/secrets/jane

Flag	Description
--eo-password-file string	Read the password for recipients outside Proton from a file, or - for stdin
--include-inline	Include inline attachments, such as signature graphics

get

Show a password-protected message, decrypted.

LINK is the address you were sent or the id in it, and the password is the one whoever sent it gave you rather than a Proton password. Neither this nor anything else under protected needs an account.

Such a message is gone 28 days after it was sent, and the Expires line says when. A Replies line counts the answers already sent from behind the link.

proton mail protected get LINK

proton mail protected get 9fK2pQ7xNv4mB8 --eo-password-file /run/secrets/jane
proton mail protected get 'https://mail.proton.me/eo/9fK2pQ7xNv4mB8' --eo-password-file -
proton mail protected get 9fK2pQ7xNv4mB8 --eo-password-file /run/secrets/jane --body-only

Flag	Description
--body-only	Emit only the body, with no headers or attachment list
--eo-password-file string	Read the password for recipients outside Proton from a file, or - for stdin
--include-inline	List inline attachments too, such as signature graphics
--render string	Which representation of the body to print: text, html, raw (default text)
--strip-quotes	Drop quoted reply blocks from the body

reply

Reply to a password-protected message.

The answer goes to whoever sent it and nobody else - the link knows no other address - sealed to their key, with the original quoted below your text.

Proton takes five answers from behind one link. –eo-password-file - claims standard input, so it cannot be combined with –body -.

proton mail protected reply LINK

proton mail protected reply 9fK2pQ7xNv4mB8 --eo-password-file /run/secrets/jane --body 'Got them, thanks.'
proton mail protected reply 9fK2pQ7xNv4mB8 --eo-password-file /run/secrets/jane --body 'Signed copy attached.' --attach ./signed.pdf

Flag	Description
--attach stringArray	File to attach (repeatable)
--body string	Your text, placed above the quoted original (- reads stdin)
--eo-password-file string	Read the password for recipients outside Proton from a file, or - for stdin
--html	Compose in HTML (default: match the original)
--no-quote	Do not quote the original message

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Every command also takes the flags that work everywhere.