Feature Request: Nimiq Pay — Show Transaction Memo in Payment Notifications

Hi Nimiq team,

I ran into this while building my mini app (NimJump: https://nimjump.zetashare.com), and came up with an idea I think makes a lot of sense — wanted to share it with you directly.

The problem: I wanted to notify a player when something happens in the app even if they've closed the tab — for example, when someone joins their VS match and a 24-hour play window starts. But mini apps run inside a WebView, and WebViews simply don't support push/Notifications APIs, so there's no way to reach a player who isn't actively in the app.

The idea I came up with: Nimiq Pay already shows a notification the instant a payment arrives. So I started sending both players a near-zero NIM amount (0.00001 NIM) with a custom memo like "NimJump: VS match started — 24h to play!" — purely so it triggers your existing "payment received" notification and acts as a message to the player. It's a workaround, but it works, and I think it points to something genuinely useful you could build in properly.

My actual request: please consider surfacing the transaction memo directly in that notification. If you do, this stops being a workaround and becomes a real, zero-infrastructure notification channel that any mini app could use to reach players asynchronously — not just mine. I really think this could be a great addition to the Mini Apps framework.

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Feature Request: Nimiq Pay — Show Transaction Memo in Payment Notifications