Arduino, Monitoring Door-Opening via Gmail

#include <Phpoc.h>
#include <ezButton.h>

PhpocEmail email;
ezButton button(A0);  // create Button object that attach to pin A0;

void setup() {
  Serial.begin(9600);

  Phpoc.begin(PF_LOG_SPI | PF_LOG_NET | PF_LOG_APP);

  //Phpoc.beginIP6(); uncomment this line if you are going to use IPv6

  button.setDebounceTime(100); // set debounce time to 100 milliseconds
}

void loop() {
  button.loop(); // MUST call the loop() function first

  if(button.isPressed()) {    // if door is opened...
    email.setOutgoingServer("smtp.gmail.com", 587);
    email.setOutgoingLogin("Google ID", "Google Password");
 
    email.setFrom("Gmail address ", "Sender Name");
    email.setTo("Receiver email address", "Receiver Name");
    
    email.setSubject("Door is opened. [#905]");  // Mail Subject
    
    // Mail Contents
    email.beginMessage();
    email.println("#905");
    email.println("");
    email.println("Door is opened.");
    email.endMessage();                
 
    if (email.send() > 0)  // Send Email
      Serial.println("Your Mail has been sent successfully");
    else
      Serial.println("Your Mail is not sent");
  } else if (button.isReleased()) { // if door is closed...
        // Write codes in the same way
  }
}