Firebase Functions Send Email using Google OAuth2

Send email through firebase functions with Node.js using Google's OAuth2, Nodemailer, SMTP & Gmail

Instructions to Setup OAuth2

Please follow my article on Medium for OAuth2 setup

Calling function from Android APP

addMessage("[email protected]")

private fun addMessage(text: String): Task<String> {
        val data = hashMapOf(
            "text" to text,
            "push" to true
        )
        val functions = FirebaseFunctions.getInstance()
        return functions
            .getHttpsCallable("sendemail")
            .call(data)
            .continueWith {
                it.result?.data as String
            }
    }

For other platfroms and more details

Please follow official documentation for other platforms