Currently, it is cumbersome to browse long email conversations:
* individual emails are collapsed, therefore I can only read the address of the sender
* clicking on an individual email to open it displays the full conversation backwards, which makes it very long to scroll through the page
* it's generally hard to find the email I'm looking for (I basically click randomly in hope to find the proper email, until I do)

In my humble opinion:
* individual emails should not display the entire conversation (allow collapsing / uncollapsing it with a "..." button like in gmail)
* collapsed emails should still display the first few words of the last email (like in gmail) to make it easy to find emails in a long conversation
* collapsing / uncollapsing an email shouldn't change the y-scroll value of the page (otherwise it's hard to follow what's going on on the screen)