Mail listing email status/meta data

[kulmann]

Initial Checklist

• I understand this is a user story and questions should be posted in the Community Discussions
• I searched issues and couldn’t find anything (or linked relevant results below)

User Story

• As an email user, I want to see additional information about each email on first glance, so that I know the most important information from the email listing already.

User Value

Rich information

Acceptance Criteria

• each email potentially displays the following meta data / status info:
  • email is unread / new
  • email belongs to a thread
  • email was replied to and/or forwarded
  • email has an attachment
  • email is suspected spam/phishing
  • email is flagged (= urgent)
  • email is deleted, but not expunged, yet (typically strikethrough) we won't need this as stalwart doesn't have that state
• status info doesn't clutter the view

[pbleser-oc]

We might also want to have a visual indicator for draft emails, which is the only JMAP/IMAP keyword that is currently not covered by the specification above.

The design agency didn't include that in the mockup, but:

• draft emails being in the Drafts folder is merely a convention: it's something MUAs (mail clients, such as our Web UI) decide to do when they store a draft email on the server, choosing to store them in the Drafts mail folder
• it is thus not a technical or specification requirement that any mail server enforces
• anyone could just simply move (e.g. using drag&drop) an email that is marked with the $draft keyword from the Drafts/ folder into the Inbox/ folder
• thus, we have to expect draft emails to show up in any folder, including inboxes, and so we probably need a visual indicator for that flag ($draft) as well