如果你只想要电子邮件客户端，你应该使用android.content.Intent。带有数组的EXTRA_EMAIL。举个例子:

final Intent result = new Intent(android.content.Intent.ACTION_SEND);
result.setType("plain/text");
result.putExtra(android.content.Intent.EXTRA_EMAIL, new String[] { recipient });
result.putExtra(android.content.Intent.EXTRA_SUBJECT, subject);
result.putExtra(android.content.Intent.EXTRA_TEXT, body);

在电话邮件客户端撰写邮件:

Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("plain/text");
intent.putExtra(Intent.EXTRA_EMAIL, new String[] { "some@email.address" });
intent.putExtra(Intent.EXTRA_SUBJECT, "subject");
intent.putExtra(Intent.EXTRA_TEXT, "mail body");
startActivity(Intent.createChooser(intent, ""));

下面的代码对我有用!!

import android.support.v4.app.ShareCompat;
    .
    .
    .
    .
final Intent intent = ShareCompat.IntentBuilder
                        .from(activity)
                        .setType("application/txt")
                        .setSubject(subject)
                        .setText("Hii")
                        .setChooserTitle("Select One")
                        .createChooserIntent()
                        .addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET)
                        .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

activity.startActivity(intent);

使用intent.setType(”消息/根据rfc822”以);工作，但它显示额外的应用程序，不一定处理电子邮件(如GDrive)。使用意图。ACTION_SENDTO与setType("text/plain")是最好的，但你必须添加setData(Uri.parse("mailto:"))，以获得最好的结果(仅电子邮件应用程序)。完整代码如下:

Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setType("text/plain");
intent.setData(Uri.parse("mailto:IT@RMAsoft.NET"));
intent.putExtra(Intent.EXTRA_SUBJECT, "Email from My app");
intent.putExtra(Intent.EXTRA_TEXT, "Place your email message here ...");
startActivity(Intent.createChooser(intent, "Send Email"));

这是一个迟来的答案，尽管我想出了一个可以帮助其他人的解决方案:

Java版本

Intent emailIntent = new Intent(Intent.ACTION_SENDTO);
emailIntent.setData(Uri.parse("mailto:abc@xyz.com"));
startActivity(Intent.createChooser(emailIntent, "Send feedback"));

芬兰湾的科特林版本

val emailIntent = Intent(Intent.ACTION_SENDTO).apply { 
    data = Uri.parse("mailto:abc@xyz.com")
}
startActivity(Intent.createChooser(emailIntent, "Send feedback"))

这是我的输出(只有Gmail +收件箱建议):

我从Android开发者网站上得到了这个解决方案。

适用于所有android版本:

String[] to = {"email@server.com"};
Uri uri = Uri.parse("mailto:email@server.com")
  .buildUpon()
  .appendQueryParameter("subject", "subject")
  .appendQueryParameter("body", "body")
  .build();
Intent emailIntent = new Intent(ACTION_SENDTO, uri);
emailIntent.putExtra(EXTRA_EMAIL, TO);
startActivity(Intent.createChooser(emailIntent, "Send mail..."));

更新到Android 10，现在使用Kotlin…

fun Context.sendEmail(
  address: String?,
  subject: String?,
  body: String?,
) {
  val recipients = arrayOf(address)
  val uri = address.toUri()
    .buildUpon()
    .appendQueryParameter("subject", subject)
    .appendQueryParameter("body", body)
    .build()
  val emailIntent = Intent(ACTION_SENDTO, uri).apply {
    setData("mailto:$address".toUri());
    putExtra(EXTRA_SUBJECT, subject);
    putExtra(EXTRA_TEXT, body);
    putExtra(EXTRA_EMAIL, recipients)
  }
  val pickerTitle = getString(R.string.some_title)
  ContextCompat.startActivity(this, Intent.createChooser(emailIntent, pickerTitle, null)
}

.．.在更新到API 30之后，代码没有填充电子邮件客户端的主题和主体(例如Gmail)。但我在这里找到了答案:

fun Context.sendEmail(
  address: String?,
  subject: String?,
  body: String?,
) {
  val selectorIntent = Intent(ACTION_SENDTO)
    .setData("mailto:$address".toUri())
  val emailIntent = Intent(ACTION_SEND).apply {
    putExtra(EXTRA_EMAIL, arrayOf(address))
    putExtra(EXTRA_SUBJECT, subject)
    putExtra(EXTRA_TEXT, body)
    selector = selectorIntent
  }
  startActivity(Intent.createChooser(emailIntent, getString(R.string.send_email))) 

}