Send Email using Intent - Android Studio - Kotlin

How To Send an Email Using the Intent

Learn how to implement email functionality in your Android app using Kotlin and Android Studio IDE. This step-by-step guide covers using Android Intents to launch email clients with pre-filled recipient addresses, subjects, and message bodies.

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Step 1: Create a new Project or open your project

Step 2: Code

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <!--For Gmail Intent: Since Android 11 (API level 30), most user-installed apps are not visible by default.
    In your manifest, you must statically declare which apps you are going to get info about, as in the following:-->
    <queries>
        <package android:name="com.google.android.gm" />
    </queries>

....

</manifest>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:app="http://schemas.android.com/apk/res-auto"
              xmlns:tools="http://schemas.android.com/tools"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:orientation="vertical"
              android:padding="10dp"
              tools:context=".MainActivity">

    <!--EditText: Input the recipient-->
    <EditText
            android:id="@+id/recipientEt"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/bg_edittext"
            android:hint="Recipient email(s)"
            android:inputType="textEmailAddress"
            android:padding="10dp"
            android:textColor="@color/colorBlack" />

    <!--EditText: Input the subject of email-->
    <EditText
            android:id="@+id/subjectEt"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/bg_edittext"
            android:hint="Subject"
            android:layout_marginTop="2dp"
            android:layout_marginBottom="2dp"
            android:inputType="text|textCapSentences"
            android:padding="10dp"
            android:textColor="@color/colorBlack" />

    <!--EditText: Input the message-->
    <EditText
            android:id="@+id/messageEt"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/bg_edittext"
            android:gravity="start"
            android:hint="Enter message here..."
            android:inputType="text|textCapSentences"
            android:minHeight="150dp"
            android:padding="10dp"
            android:textColor="@color/colorBlack" />

    <!--Button:   Launch existing email clients to send email-->
    <Button
            android:id="@+id/sendEmailBtn"
            style="@style/Base.Widget.AppCompat.Button.Colored"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="end"
            android:text="send Email" />

</LinearLayout>

MainActivity.kt

package com.technifysoft.emailintent

import android.content.Intent
import android.content.pm.PackageManager
import android.os.Bundle
import android.widget.Button
import android.widget.EditText
import androidx.appcompat.app.AppCompatActivity

class MainActivity1 : AppCompatActivity() {

    //declare views
    private lateinit var mRecipientEt: EditText
    private lateinit var mSubjectEt: EditText
    private lateinit var mMessageEt: EditText
    private lateinit var mSendEmailBtn: Button

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        //initializing views with activity_main.xml
        mRecipientEt = findViewById(R.id.recipientEt)
        mSubjectEt = findViewById(R.id.subjectEt)
        mMessageEt = findViewById(R.id.messageEt)
        mSendEmailBtn = findViewById(R.id.sendEmailBtn)

        //button click to get input and call sendEmail method
        mSendEmailBtn.setOnClickListener {
            //get input from EditTexts and save in variables
            val recipient = mRecipientEt.text.toString().trim()
            val subject = mSubjectEt.text.toString().trim()
            val message = mMessageEt.text.toString().trim()

            //method call for email intent with these inputs as parameters
            sendEmail(recipient, subject, message)
        }
    }

    private fun sendEmail(recipient: String, subject: String, message: String) {
        //call email share method
        val gmailPackage = "com.google.android.gm"
        // return true if gmail is installed
        val isGmailInstalled = isAppInstalled(gmailPackage)

        /*ACTION_SEND action to launch an email client installed on your Android device.*/
        val intent = Intent(Intent.ACTION_SEND)
        // put recipient email in intent
        /* recipient is put as array because you may wanna send email to multiple emails
           so enter comma(,) separated emails, it will be stored in array*/
        intent.putExtra(Intent.EXTRA_EMAIL, arrayOf(recipient))
        //put subject of email
        intent.putExtra(Intent.EXTRA_SUBJECT, subject)
        //put message of email in intent
        intent.putExtra(Intent.EXTRA_TEXT, message)
        if (isGmailInstalled) {
            intent.type = "text/html"
            intent.setPackage(gmailPackage)
            startActivity(intent)
        } else {
            // allow user to choose a different app to send email with
            intent.type = "message/rfc822"
            startActivity(Intent.createChooser(intent, "choose an email client"))
        }
    }

    private fun isAppInstalled(packageName: String): Boolean {
        return try {
            packageManager.getApplicationInfo(packageName, 0)
            true
        } catch (e: PackageManager.NameNotFoundException) {
            false
        }
    }
}

Step 3: Run Project

Output