This looks good, very glad to see MagicBell, push notification systems are extremely hard, just have a look at how Slack manages it and it's just the beginning.
Sometimes they come late, get duplicated or even not arrive at all, i'm excited that there are more startups and companies providing this service.
There are companies out there that provide time critical notification updates, courier systems, parcel tracking, financial services, stock trading, emergency services, cryptocurrency movements, etc that would benefit from this.
I would love to see if there are more startups or products out there like MagicBell that have well designed notification systems that guarantee notification delivery without error.
Kudos on the release!