Personalization helpers and a new layout.
The Send As Email page has been redesigned to accomodate the new Plain Text template and the new sub-list functionality. In addition, for accounts that use personalization, it is now easy to add personalization tokens into the FROM address and SUBJECT line of the message.
Under the Email To section, the new List Selector can be found. The List Selector is a pop-up window (which is opened by clicking the up arrow icon) that lets you select one or more sub-lists. Only opt-in/opt-out sub-lists can be used for delivering email. If you select more than one sub-list, the lists will be merged together to remove any duplicates before the mailing is sent out. So if a subscriber is in both List A and List B and you send your mailing to both List A and List B at the same time, the subscriber will receive only one email.
The new Personalization Helper is a pop-up window that is opened by clicking the icon next to the FROM and SUBJECT boxes. Use this helper to add special tokens to the 'FROM' address or Subject of your message.