The Pushover integration is missing a few features and improvements that have been requested for years:
Outdated icon — The current Pushover icon in notifications doesn’t match their current branding and looks outdated.
TTL support — Pushover supports a TTL parameter to auto-expire notifications, but it’s not exposed in the integration. This was already requested in issue #809, 3 years ago.
Custom Application Key — Currently only the User Key is required, meaning all notifications come from UptimeRobot’s own Pushover app with no way to customize the icon or sender. Supporting a custom App Key would fix this. Already requested in issue #1071, 2 years ago.