Features unrelated to email, including reading newsgroups and reading RSS feeds, fall outside the scope of the project.
The goal of the design is to be minimalistic (no unnecessary menus, buttons, etc) and non distracting (no fancy colors, animations, etc). All displayed things should be useful in one or another way and should be carefully positioned for easy usage. Fonts, sizes, colors, etc should be material design whenever possible.
There are requests daily to change the appearance in this or that way, but the problem is that these requests are more often than not conflicting. To prevent making other people unhappy, changes in the appearance always need to clearly and objectively contribute to the usability of the app to be considered.
-A feature will be considered useful to most people if more than 0.5% of the users request a feature, which in practice means about 500 people.
+A feature will be considered useful to most people if more than 0.5% of the users request a feature, which in practice means about 2500 people.
Features not fulfilling these requirements will likely be rejected. This is also to keep maintenance and support in the long term feasible. Please see also this Wikipedia article about feature creep.
Note that there are already more features and options in FairEmail than in any other Android email client.