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I would like to send an e-mail in my app using whatever default mail provider the user already has setup. It must be possible to send the e-mail without requiring any user interaction. If I can avoid showing any UI, that would be the best solution. The one thing that is unacceptable is to either hardcode or request the user enter their e-mail credentials. The user had to have already setup their account such as Gmail with their credentials. All my app does is use an existing e-mail provider that has been setup.
Most of the posts I have found here use an Intent but from what I understand, that will show the e-mail UI and requires the user to press the Send button.