I finally got around to signing up for the OmniFocus Mail Drop beta last night. From the OmniGroup forums:
We call this new feature the "OmniFocus Mail Drop". Unlike previous mail-processing features, we wanted a method that wouldn't require any of your devices to be present in order to add items to OmniFocus, we wanted to add the much-requested better attachment support, and we wanted to reduce the amount of extra work you had to do in order to get your items into OmniFocus as much as possible.
To this end, we implemented the feature as part of the Omni Sync Server. Accounts on the server can now have a special email address generated. Any message forwarded or sent to that address will be processed (including attachments) and added to your OmniFocus database right there on the server.
This is going to make it a lot easier to process emails and get them into OmniFocus when I'm away from my computer. My iPhone just became a much more valuable tool for managing my email workflow.
Find out more about the OmniFocus Mail Drop, including how to sign up here.