The mail client built into the Opera browser has an Attachments filter which allows you to see all messages by attachment type. After that, you can sort the messages by 'From', 'Subject', 'Size', etc. No thumbnails as in his example, though.
As with everything in the Opera mail client, it is all handled through two panes - filtering on the left (Unread, Received, Labels, Attachments, etc.) and the email messages themselves on the right. All email accounts are aggregated together. I've been hugely enamored with its simplicity and elegance for years.
As with everything in the Opera mail client, it is all handled through two panes - filtering on the left (Unread, Received, Labels, Attachments, etc.) and the email messages themselves on the right. All email accounts are aggregated together. I've been hugely enamored with its simplicity and elegance for years.