Disroot. They have problems in the last time, but I think it checks your requirements.

Fossify Launcher. You can rename any app as you wish.

Thank you for making this website, it’s really interesting!

Sometimes it doesn’t work, maybe it’s overloaded. Try again later!

Free software Foundation’s opinion: https://www.fsf.org/resources/webmail-systems

I got you, I’m sorry for that. Currently, there are only web wrappers, like ZapZap. There have been clients, but when Meta finds them, it will ban you and try to block the app.

Brother, don’t use Whatsapp. It’s a privacy nightmare. It stores your messages unencrypted on Google/Apple servers.