[EPIC] Allow Downloading all attachment as once

[chibenwa]

As a user I want to have a button in TeamMail to downlaod all attachments of an email at once.

download-all.mp4

We will design and implement a JMAP extension (download all):

POST download

[
    {
        "blobId": "abcd",
        "filename": "star.png"
    },
    {
        "blobId": "defg",
        "filename": "planet.png"
    },
    ...
]

Will return a ZIP containing all the files.

-> Reject if not found, no right to access, too big

• ADR
• Document the JMAP extension
• Groom & implement

[Arsnael]

Implementing and using Blob/get for example from https://www.ietf.org/archive/id/draft-ietf-jmap-blob-18.html#name-blob-get that is in the rfc editor queue and bound to be soon released as a standard wouldn't get the same result, without having to develop a custom TMail method for that?

[chibenwa]

Blob/get is base64 encoded on a JSON

Not appropriate for big downloads ;-)