This is really great. I've managed to convert a few people to talk over Signal and while I am backing up my chats to my home server (I see you will be offering something like this in the future), this wasn't really an option for the people I converted over to Signal, so they were constantly afraid that they might lose the pictures or the chats if something happened to their phone.

I know, you can download media and save it through something else, but most people just opt-in whatever is default. I think my only suggestion would be to make it real clear or even maybe have some sort of counter that says something like "39 images are no longer backed up" or "8374 media items are NOT being backed up, 507 are in backup, 29 will be removed tomorrow". This could be directly on the backup page, I'm not currently running the beta build as I installed the apk, but if it's already on there, scratch the feedback!

Thank you again for all your hard work on this, it really is appreciated (financially too!)