Locale supports incoming phone calls, while there are plug-ins that support incoming SMS. The Skim Internet plug-in might be useful for detecting Twitter messages.

Supporting other methods of contact, such as email, just aren’t possible. The built-in Android email program has no way of notifying other apps than an email has arrived.

The alternative would be to have Locale poll these services, in addition to the native apps. Locale isn’t an email client, so it doesn’t make sense for us to implement our own POP and IMAP clients just to determine if a new message has arrived.

Unfortunately, Android just doesn’t currently have the support necessary for this at this time.

At long last Locale 3.0 introduces the Calendar condition to detect events on your Google Calendar, Exchange Calendar, or any other calendar supported by Android.

While Locale 3.0 is available for Android 2.2 or later, the Calendar condition requires Android 4.0 or later. To learn more about Locale 3.0, please see our release notes here http://blog.twofortyfouram.com/post/19303488607/locale-3-0