When I receive an email with information about a meeting, I usually add it to my calendar instantly. This way, I don't forget about it.
I've watched a number of people want to add information to their calendar from an email and they complain about it being too cumbersome or taking too long. When I watch them, they will open up their calendar, navigate to the date they want, double click on the date, put in the time information, go back to the email, highlight and copy all of the information, go back to the calendar entry, and paste it in the notes. I usually will tell them that I understand why they don't like doing it that way.
Then, I show them how I do it. I always have the little calendar displayed in my To Do pane. If the meeting will be on a date displayed on that calendar, just drag and drop the email on to the date you want. This will automatically open up a new appointment entry, already have the date filled in, and already have pasted the text of the email into the notes section. All you have to do is add the time.
In the alternative, I will just drag and drop the email onto the calendar tab. Again, this opens up a new appointment window and pastes the email content into the notes section. All you have to do at this point is set the date and time.