Confirmation message rather than forwarding to a confirmation page OR add redirect URL to settings

[souldanger]

It is annoying when users subscribe to a mailing list on a website and then being forwarded to a standard Listmonk page, leaving the website where they have signed up.

It should be made available via settings to either

• show a custom confirmation message in subscription form
  OR
• allow for a custom url to be forwarded to on the website where the subscription form is

Thanks!