If they do not already have Pushbullet, they'll get an email inviting them to join. Just pick something you want to send, and in the field where you choose where to push your item, select 'Add a friend.' The app pulls in all of your contacts that are synced with your phone. You can add friends from either the Web site or app, but it's easier to do in the app.

You can even push items to the Android devices of your friends (so long as the you have the email address they signed up with) and vice versa. For now, file size is limited to 25MB, a step up from the earlier 10MB limit. That's because neither of those options automatically saves the file. This makes Pushbullet a more convenient option for transferring files than sending an email attachment or using Dropbox. It's important to note that files are, once pushed from your desktop, automatically downloaded onto your mobile device. For instance, an image opens in the Gallery app, while PDFs might open in Adobe Reader, if you have it installed.

Finally, files that are pushed to your phone open up in the appropriate app for that particular file type. If you tap a note or list notification, those items will open in the app, while pushed links open in your phone's default browser and addresses open in a map app. When Pushbullet pushes an item to a mobile device, it generates a notification in the notification bar.

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