I have to send an email from IntentService. My data is mostly the backup from a phone. I am using smtp.google.com + javamail.I can use a gmail account and send data through it.(http://www.oracle.com/technetwork/java/javamail/faq/index.html#gmail):
From my point of view the problem with this approach is that my app uses the gmail account and sends data via my account. All personal data would go through one my account. Question#1 - Is it a good approach to do it?
The gmail api uses OAuth 2.0. And I have to store my client ID in some place of my program. I read that it is impossible to restore login/password from it. This token has validity. Question#2 Is it possible to use this token for reading or deleting something from gmail account until it is valid?
For all examples of my app would be the same gmail account. This think bothers me sometimes, because if something happens with gmail account I will not be able to do anything. Question#3 Is it worth to use services like https://www.mailgun.com/ or maybe to create at least another gmail account and to use them both?