How can I display a confirmation message after someone subscribes via simplenews? I want to show a message after users submit their email in Simplenews block.

Currently when the user clicks on the subscribe button, the page is refreshed and no message shows ups.

Instead, I prefer to show a message with javascript in modal or something.

Any help/suggestions?
Consider using the Rules module to implement this. And enable the Simplenews rules module (a sub-module of Simplenews).

Then create a rule like so:


Event: "A user has been subscribed".
Action: "Show a message on the site" (located within "System").