Alternatively, you can try Tripit[1] which has more features, but there is definitely more friction involved as you either need to grant access to your email account or manually forward emails.
That being said, I'm on Android and do use it to manage all my trip data. Prior to that, I was using various versions of Worldmate.
I do love the service. Their website design feels aged and worn, but the functionality is great. I love trying out confirmation emails from new travel services to see if they can parse them. And they usually do a good job.
They get given a key to act on your behalf they would never get your actual login details.
Click Analyze to see that I've flown 297 flights to 83 unique airports for a total of 539365 miles, which is 2.258x to the moon.