Add push notifications for the android version. This can be done via Unified Push. I believe this should be done because Android doesn’t allow you to have a lot of background apps.
what kind of android device and flavour/version are you using?
usually, if you can do unified push, then you can also run apps in the background.
11~15. Android has a limit on the number of background processes.
Delta Chat already uses PUSH, see FAQ - Delta Chat
for unified push, from another chat:
Does DeltaChat support UnifiedPush?
that was discussed several times and is ongoing. rough stance atm is that it would not solve problems at hand:
If UnifiedPush can run in background, DeltaChat can as well
If system kills apps they will kill UnifiedPush as well
Delta Chat is similar battery efficient as UniversalPushProviders. for reliability reasons, it does not make sense for Delta to e.g. receive its notifications over Conversations, it can do the same just as good
Any app can argue that it does not want to support UnifiedPush by the same argument presented here, yet they chose to support it or work on supporting it. The point of UnifiedPush is that the user do not need to run a background process for each app that has push notifications. Even if each app is similarly battery efficient as UnifiedPush providers, 10 of them added up is almost certainly less battery efficient than one single app process handling all the push notifications.
See also Implement push notifications through unifiedpush.
DeltaTouch, which is a mobile-Linux only client and therefore has different constraints, has long-term plans to implement UnifiedPush.