I don't do this with all emails. I just move the emails over into Evernote that take me longer to get done. But I adjust the note title (that gets generated by the email subject). For instand, I change "10 Laptops for sales department" into "review quote". So its actually a task, not an email in evernote. If the task needs to get done on a specific day and time, it goes directly into my calender and not into Evernote.