.mail app
Best of luck w/ the implementation. However, reading the concept, I am unimpressed.<p>In Mail.app, I can already mark e-mails with different-colored flags, which allows me to come up with my own "get back soon" or "get back later" type of a system.<p>The assertion that e-mail hasn't changed since 1970's is false. Modern e-mail clients manage it much better. Compare Mail.app, Outlook and GMail to PINE--the difference is staggering. The true innovator in the e-mail space has been GMail, which has brought things like autosave, concepts such as embracing the fact that it is not truly productive to file every single e-mail into a purposeful folder, embracing that tagging is better than folders. GMail also really pushed the conversational view and presented it in a single-screen way that was innovative (compare how long it took e-mail clients to catch up with that... and no, "group by thread" did not compare).<p>I'm also very wary of anyone advertising "clean typography." People start adding spacing and now I only end up previewing 2/3rds of what I could preview in one screenful.