url_launcher - Flutter
Many times, an app wants to launch another app present on the user’s device to accomplish a task. For example, if your app has a “contact us” option, then you might give your app users options like email, text message, or call to contact. Then in this scenario, your app can simply launch an app already present on the user’s device to accomplish this. And it is achieved by just calling a single method from the url_launcher flutter package. In this video, you will learn to use the url_launcher flutter package.
Read here (with code) - / call-this-single-method-to-open-email-phon...