Message ids repeat across accounts, so a hook payload naming only an
emailId could not tell a plugin which mailbox the message lies in when
it is a shared or group account's.
onBeforeEmailStarToggle and onEmailStarToggle now carry accountId when
the starred message is not in the user's own account, as the
message-row-actions click context does. Every star (the row's button,
the reader's star, the key, the menu) goes through toggleStar, one
message at a time, so one accountId names it; the account is resolved
before the plugins are asked. An own message's payload is unchanged.
onAfterEmailSend now carries accountId, the JMAP account the sent
message lies in (a mail sent from a shared or group identity lies in
that account), so api.email.get finds it. sendEmail returns that account
as emailAccountId, the S/MIME send too. The hook also carries
composerId, the id the sending composer's slots and actions gave
plugins, so a plugin can act on what the user chose in that composer.
The list was a stack of clickable divs. Screen readers heard nothing when
j or k moved the selection, every row added several Tab stops (Compose
sat 253 Tabs from the top), and a deleted message left the focus on the
page.
The list is now a treegrid named "Messages": one Tab stop, rows named in
one sentence (unread, sender, subject, date, flags, and the preview when
that setting is on), conversations with aria-expanded and their
messages a level down, position and list size on every row. j, k and the
arrows move the focus with the selection, Space ticks a row, Enter opens
it, Shift+F10 or the menu key opens its actions, and after a delete the
focus lands on the next row. With the actions button setting on, each
row shows a button for the same menu, for pointers that can't hover or
right-click.
Pasted and dropped images used to get the file name as alt text, and
there was no way to change it. Now a small dialog asks what the image
shows right after it is inserted, with a "Decorative image" option that
writes alt="". An image already in the text can be described from the
toolbar or from the ALT button on the selected image. The plain-text
part of an HTML mail writes described images as "[Image: ...]" and
leaves decorative ones out.
The formatting toolbar now also re-renders when only the selection
changes, so its pressed states and the image button follow the caret.