Improved file attachments for messages

We’ve made a few subtle but helpful improvements to the new message page.

File attachments now begin uploading as soon as you add them, rather than waiting until you press “Send.” You can monitor the progress of each upload and retry any that fail. You can also drag and drop attachments anywhere onto the page.

We also now preserve your draft for the current browser tab, so you won’t lose your message if you refresh the page or navigate away and return.