Implicit intent causes the app to crash at button press

In an attempt to understand how the implicit intents works, I wanted to create a layout with two edittext and one button. In the first edittext, the user should enter his/her the email address, and in the second textview he/she should enter the email address of the recipient, and when he/she clicks on the button, all the component registered for the Action SEND should appear, including my app.

Below are my attempts and the logcat:

UPDATED_JavaCode

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        String from = et_from.getText().toString();
        String to = et_to.getText().toString();
        String data = from + to;

        Intent i = new Intent();
        i.setAction(android.content.Intent.ACTION_SEND);
        i.setType("text/plain");
        i.putExtra(android.content.Intent.EXTRA_TEXT, from + to);
        //i.setData(Uri.parse(data.toString()));
        startActivity(i);
    }
});

UPDATED_Manifest:

<uses-sdk
    android:minSdkVersion="19"
    android:targetSdkVersion="19" />

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".EmailActivity"
        android:label="@string/title_activity_intents_test01" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name="CustomActivity"> </activity>
    <intent-filter>
        <action android:name="android.intent.action.SEND" />
        <category android:name="android.intent.category.DEFAULT"/>
        <data android:scheme="text/plain"/>
    </intent-filter>
</application>

Logcat:

11-15 14:47:19.714: E/AndroidRuntime(18239): FATAL EXCEPTION: main
11-15 14:47:19.714: E/AndroidRuntime(18239): Process: com.example.emailactivity, PID:18239
11-15 14:47:19.714: E/AndroidRuntime(18239): android.content.ActivityNotFoundException:
                    No Activity found to handle Intent { act=android.intent.action.SEND dat=yt (has extras)
                    }
11-15 14:47:19.714: E/AndroidRuntime(18239):     at
                    android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1672)
11-15 14:47:19.714: E/AndroidRuntime(18239):     at
                    android.app.Instrumentation.execStartActivity(Instrumentation.java:1442)
11-15 14:47:19.714: E/AndroidRuntime(18239):     at
                    com.example.emailactivity.EmailActivity$1.onClick(EmailActivity.java:46)

ACTION_SEND does not use setData() -- please remove that.

Also, please use the keys documented in the ACTION_SEND documentation for your extras. Note that there is no "from" and there is no "to", so you can remove those extras. You will need to provide EXTRA_TEXT or EXTRA_STREAM to provide the actual content that you are sharing.