title: App crashes when trying to use JavaMail for Android
body: <p>I'm trying to use the JavaMail Android port in my application but my app crashes when I try to send anything. I've followed the guide <a href="http://www.jondev.net/articles/Sending_Emails_without_User_Intervention_%28no_Intents%29_in_Android" rel="nofollow">here</a> and created the <code>Mail</code>class. Then in my <code>MainActivity</code> I've added</p>
  
  <pre><code>protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
  
      Mail m = new Mail("mailtosendfrom", "mypassword");
      new SendMailTask().execute(m);
  }
  
  private class SendMailTask extends AsyncTask&lt;Mail, Void, Void&gt; {
      @Override
      protected Void doInBackground(Mail... mail) {
          Mail m = mail[0];
  
          String[] toArr = {"mailtosendto"};
          m.setTo(toArr);
          m.setFrom("mailtosendfrom");
          m.setSubject("This is an email sent using my Mail JavaMail wrapper from an Android device.");
          m.setBody("Email body.");
          try {
              m.send();
          } catch (Exception e) {
              e.printStackTrace();
          }
          return null;
      }
  }
  </code></pre>
  
  <p>AndroidManifest.xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="mypackage" &gt;
  
      &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
  
      &lt;application ...&gt;
          ...
      &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>
  
  <p>Now when I start my app it crashes immediately with the following message in logcat:</p>
  
  <pre><code>04-19 18:37:58.540    4547-4547/? D/AndroidRuntime﹕ &gt;&gt;&gt;&gt;&gt;&gt; AndroidRuntime START com.android.internal.os.RuntimeInit &lt;&lt;&lt;&lt;&lt;&lt;
  04-19 18:37:58.540    4547-4547/? D/AndroidRuntime﹕ CheckJNI is ON
  04-19 18:37:58.570    4547-4547/? E/memtrack﹕ Couldn't load memtrack module (No such file or directory)
  04-19 18:37:58.570    4547-4547/? E/android.os.Debug﹕ failed to load memtrack module: -2
  04-19 18:37:58.590    4547-4547/? D/AndroidRuntime﹕ Calling main entry com.android.commands.am.Am
      --------- beginning of system
  04-19 18:37:58.590    1313-1823/system_process I/ActivityManager﹕ Force stopping com.oskar.ratingapp appid=10046 user=0: from pid 4547
  04-19 18:37:58.600    4547-4547/? D/AndroidRuntime﹕ Shutting down VM
  04-19 18:37:58.600    4547-4550/? I/art﹕ Debugger is no longer active
  04-19 18:37:58.600    4547-4556/? E/art﹕ Thread attaching while runtime is shutting down: Binder_1
  04-19 18:37:58.600    4547-4556/? I/AndroidRuntime﹕ NOTE: attach of thread 'Binder_1' failed
  04-19 18:37:58.990    4559-4559/? D/AndroidRuntime﹕ &gt;&gt;&gt;&gt;&gt;&gt; AndroidRuntime START com.android.internal.os.RuntimeInit &lt;&lt;&lt;&lt;&lt;&lt;
  04-19 18:37:58.990    4559-4559/? D/AndroidRuntime﹕ CheckJNI is ON
  04-19 18:37:59.030    4559-4559/? E/memtrack﹕ Couldn't load memtrack module (No such file or directory)
  04-19 18:37:59.030    4559-4559/? E/android.os.Debug﹕ failed to load memtrack module: -2
  04-19 18:37:59.050    4559-4559/? D/AndroidRuntime﹕ Calling main entry com.android.commands.am.Am
  04-19 18:37:59.060    1313-1804/system_process I/ActivityManager﹕ START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.oskar.ratingapp/.MainActivity} from uid 0 on display 0
  04-19 18:37:59.070    4559-4559/? D/AndroidRuntime﹕ Shutting down VM
  04-19 18:37:59.080    1313-1330/system_process I/ActivityManager﹕ Start proc com.oskar.ratingapp for activity com.oskar.ratingapp/.MainActivity: pid=4569 uid=10046 gids={50046, 9997, 3003} abi=x86_64
  04-19 18:37:59.080    4559-4561/? I/art﹕ Debugger is no longer active
  04-19 18:37:59.080    4569-4569/? E/libprocessgroup﹕ failed to make and chown /acct/uid_10046: Read-only file system
  04-19 18:37:59.080    4569-4569/? W/Zygote﹕ createProcessGroup failed, kernel missing CONFIG_CGROUP_CPUACCT?
  04-19 18:37:59.080    4569-4569/? I/art﹕ Not late-enabling -Xcheck:jni (already on)
  04-19 18:37:59.330    4569-4585/? D/OpenGLRenderer﹕ Render dirty regions requested: true
  04-19 18:37:59.350    4569-4569/? D/﹕ HostConnection::get() New Host Connection established 0x7fb32fc8f280, tid 4569
  04-19 18:37:59.370    4569-4569/? D/Atlas﹕ Validating map...
  04-19 18:37:59.430    4569-4585/? D/﹕ HostConnection::get() New Host Connection established 0x7fb32fc8ff40, tid 4585
  04-19 18:37:59.440    4569-4585/? I/OpenGLRenderer﹕ Initialized EGL, version 1.4
  04-19 18:37:59.460    4569-4585/? D/OpenGLRenderer﹕ Enabling debug mode 0
  04-19 18:37:59.480    4569-4585/? W/EGL_emulation﹕ eglSurfaceAttrib not implemented
  04-19 18:37:59.480    4569-4585/? W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0x7fb32fc8ef00, error=EGL_SUCCESS
      --------- beginning of crash
  04-19 18:37:59.610    4569-4584/? A/libc﹕ Fatal signal 11 (SIGSEGV), code 1, fault addr 0x750000013f in tid 4584 (AsyncTask #1)
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ Build fingerprint: 'generic_x86_64/sdk_phone_x86_64/generic_x86_64:5.0/LRX09D/1504858:eng/test-keys'
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ Revision: '0'
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ ABI: 'x86_64'
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ pid: 4569, tid: 4584, name: AsyncTask #1  &gt;&gt;&gt; com.oskar.ratingapp &lt;&lt;&lt;
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x750000013f
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ rax 0000000000000000  rbx 000000750000008f  rcx 0000000000000081  rdx 0000000000000001
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ rsi 000000000000001e  rdi 00007fb33a7a72b0
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ r8  000000000000014a  r9  0000000000000000  r10 00007fb33e64fe2c  r11 00007fb3410b12c0
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ r12 00007fb32fc91380  r13 0000000000000001  r14 00007fb32fccf268  r15 00007fb32fccf380
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ cs  0000000000000033  ss  000000000000002b
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ rip 00007fb3411144d6  rbp 0000000000000000  rsp 00007fb32fbfeb30  eflags 0000000000010202
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ backtrace:
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #00 pc 00000000000e34d6  /system/lib64/libcrypto.so (ENGINE_init+38)
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #01 pc 00000000000eb435  /system/lib64/libcrypto.so (EVP_MD_CTX_copy_ex+37)
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #02 pc 00000000000f8582  /system/lib64/libcrypto.so (HMAC_CTX_copy+66)
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #03 pc 00000000000f7e32  /system/lib64/libcrypto.so
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #04 pc 00000000000f698a  /system/lib64/libcrypto.so (EVP_PKEY_CTX_dup+234)
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #05 pc 00000000000eb52b  /system/lib64/libcrypto.so (EVP_MD_CTX_copy_ex+283)
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #06 pc 000000000004a9b3  /system/lib64/libssl.so (tls1_mac+195)
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #07 pc 0000000000032456  /system/lib64/libssl.so
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #08 pc 000000000003207e  /system/lib64/libssl.so (ssl3_write_bytes+302)
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #09 pc 00000000000261d0  /system/lib64/libssl.so (ssl3_do_write+32)
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #10 pc 0000000000028ef1  /system/lib64/libssl.so (ssl3_connect+2353)
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #11 pc 00000000000207d7  /system/lib64/libssl.so (ssl23_connect+3463)
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #12 pc 00000000000186a2  /system/lib64/libjavacrypto.so
  04-19 18:37:59.730      957-957/? I/DEBUG﹕ #13 pc 0000000000409ef1  /data/dalvik-cache/x86_64/system@framework@boot.oat
  04-19 18:37:59.800      957-957/? I/DEBUG﹕ Tombstone written to: /data/tombstones/tombstone_01
  04-19 18:37:59.840    1313-1399/system_process W/InputDispatcher﹕ channel '27028e74 com.oskar.ratingapp/com.oskar.ratingapp.MainActivity (server)' ~ Consumer closed input channel or an error occurred.  events=0x9
  04-19 18:37:59.840    1313-1399/system_process E/InputDispatcher﹕ channel '27028e74 com.oskar.ratingapp/com.oskar.ratingapp.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
  04-19 18:37:59.840      963-963/? I/Zygote﹕ Process 4569 exited due to signal (11)
  04-19 18:37:59.940    1313-4593/system_process W/ActivityManager﹕ Force finishing activity com.oskar.ratingapp/.MainActivity
  04-19 18:37:59.950    1313-1822/system_process I/WindowState﹕ WIN DEATH: Window{27028e74 u0 com.oskar.ratingapp/com.oskar.ratingapp.MainActivity}
  04-19 18:37:59.950    1313-1822/system_process W/InputDispatcher﹕ Attempted to unregister already unregistered input channel '27028e74 com.oskar.ratingapp/com.oskar.ratingapp.MainActivity (server)'
  04-19 18:37:59.950    1313-4593/system_process E/ActivityManager﹕ Invalid thumbnail dimensions: 360x360
  04-19 18:37:59.950    1313-4593/system_process W/ActivityManager﹕ Exception thrown during pause
      android.os.DeadObjectException
              at android.os.BinderProxy.transactNative(Native Method)
              at android.os.BinderProxy.transact(Binder.java:479)
              at android.app.ApplicationThreadProxy.schedulePauseActivity(ApplicationThreadNative.java:701)
              at com.android.server.am.ActivityStack.startPausingLocked(ActivityStack.java:852)
              at com.android.server.am.ActivityStack.finishActivityLocked(ActivityStack.java:2754)
              at com.android.server.am.ActivityStack.finishTopRunningActivityLocked(ActivityStack.java:2611)
              at com.android.server.am.ActivityStackSupervisor.finishTopRunningActivityLocked(ActivityStackSupervisor.java:2448)
              at com.android.server.am.ActivityManagerService.handleAppCrashLocked(ActivityManagerService.java:11507)
              at com.android.server.am.ActivityManagerService.makeAppCrashingLocked(ActivityManagerService.java:11404)
              at com.android.server.am.ActivityManagerService.crashApplication(ActivityManagerService.java:12083)
              at com.android.server.am.ActivityManagerService.handleApplicationCrashInner(ActivityManagerService.java:11599)
              at com.android.server.am.NativeCrashListener$NativeCrashReporter.run(NativeCrashListener.java:86)
  04-19 18:37:59.950      946-946/? E/lowmemorykiller﹕ Error opening /proc/4569/oom_score_adj; errno=2
  04-19 18:37:59.960    1313-1329/system_process I/ActivityManager﹕ Process com.oskar.ratingapp (pid 4569) has died
  04-19 18:38:00.000    1313-2329/system_process I/OpenGLRenderer﹕ Initialized EGL, version 1.4
  04-19 18:38:00.010    1903-1968/com.android.launcher W/EGL_emulation﹕ eglSurfaceAttrib not implemented
  04-19 18:38:00.010    1903-1968/com.android.launcher W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0x7fb32dde2980, error=EGL_SUCCESS
  04-19 18:38:00.010    1313-2329/system_process W/EGL_emulation﹕ eglSurfaceAttrib not implemented
  04-19 18:38:00.010    1313-2329/system_process W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0x7fb328cf1780, error=EGL_SUCCESS
  04-19 18:38:03.090    1313-1426/system_process D/TaskPersister﹕ removeObsoleteFile: deleting file=44_task.xml
  04-19 18:38:03.200    1313-1414/system_process W/AudioTrack﹕ AUDIO_OUTPUT_FLAG_FAST denied by client
  04-19 18:38:03.220    1313-1463/system_process W/InputMethodManagerService﹕ Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@12273a0d attribute=null, token = android.os.BinderProxy@133a0350
  04-19 18:38:03.740    1903-1968/com.android.launcher W/OpenGLRenderer﹕ Incorrectly called buildLayer on View: ShortcutAndWidgetContainer, destroying layer...
  </code></pre>