Thank you for your reply. I like the idea of self-hosting the server component. But it seems that to self-host the push proxy, I also have to compile and distribute custom copies of the mobile apps. Although I like that idea too, I’m just concerned that non-tech people in my org (especially iOS users) will have too many issues trying to get a custom app installed on their phones.
Ideally, I would like to self-host the server, but use TPNS (https://push-test.mattermost.com) as the push notification server, just so that we can simply install the mobile client apps directly from the stores. But, I certainly don’t want to violate any of the terms of use, or abuse the TPNS. We’ll likely only ever have a handful or two of concurrent users.