Direct submissions from Authorea

American Geophysical Union and Authorea Partner to Offer One-Click Submission of Manuscripts
eLife and Authorea Partner to Simplify Submission For Authors
Rockefeller University Press & Authorea Make Collaboration and Submission Easier For Authors Through Partnership
You can see a growing list of journals that allow direct submission from Authorea here.

Commenting on the document, not in emails

In addition, Authorea makes cross-disciplinary work easy by facilitating collaboration in one space.  Researchers can comment and edit the same document in real time. This eliminates delay and miscommunication caused by back and forth emails.