Currently have a simple HTML page with multiple identical forms. There is not any action on the [Send] button yet.
Here's the wanted function:
Note: The form will be used on mobile devices with on/off internet connection.
1) When [Send] is pressed, an email with the form data is sent in the background.
2) If the email is successfully sent, the background color of the [Send] button changes to green.
3) If the email is NOT successfully sent, the background color of the [Send] button changes to red, allowing the user to try again later.
If you can code it quick and working well there are more small projects to pick up, if interested.