MonkeyRunner script to send mail.

sendmail.py

import sys
from com.android.monkeyrunner import MonkeyRunner
from com.android.monkeyrunner import MonkeyDevice
from com.android.monkeyrunner.easy import EasyMonkeyDevice,By  
      
device=MonkeyRunner.waitForConnection(10)  
if device:
    print("Connect device successful!")
else:
    print("Connect device failed!")
    sys.exit(-1)

easyDevice = EasyMonkeyDevice(device)

# start Email
device.startActivity(
    component="com.android.email/"
              "com.android.email.activity.MessageCompose",
    )

# Fill 'To' field and send.
MonkeyRunner.sleep(5)
easyDevice.type(By.id('id/to'), "someone@somewhere.com")
easyDevice.touch(By.id('id/send'), MonkeyDevice.DOWN_AND_UP)
easyDevice.type(By.id('id/subject'), "Hello")

# tricky, need to click body_text first, or input text will fail.
body_text = By.id('id/body_text')
easyDevice.touch(body_text, MonkeyDevice.DOWN)
easyDevice.touch(body_text, MonkeyDevice.UP)
MonkeyRunner.sleep(1.0)
easyDevice.type(By.id('id/body_text'), "Hi, this is a test mail.")

# Actually 'SEND' won't be triggered, this mail will save as draft.
# Because Email app disallow monkeyrunner.