Yes. The desktop app and the iOS and Android apps can stay signed in to several Fluxer accounts at the same time and switch between them. Each account can be on fluxer.com or on a self-hosted instance, and you can mix both in one app.
The web app can stay signed in to several accounts too, as long as they're all on the Fluxer instance you have open in your browser, such as fluxer.com.
How do I switch between accounts quickly?
In the desktop app, Ctrl+Shift+O opens the account switcher and Ctrl+J switches to the account you used last. On macOS, they're Cmd+Shift+O and Cmd+J. You can change these keybinds under "Keybinds", and they're saved on each device. In the iOS and Android apps, open the "You" tab and tap "Add an account" to add another one.
Do I get notifications from all my accounts?
Yes, in the desktop app, as long as it's running. It keeps all your accounts connected in the background and shows notifications from each of them, with a few limits for the accounts you aren't using so a reconnect doesn't flood you with old messages.
What rules apply to each account?
Section 6 of our community guidelines applies to every account you use, and it doesn't allow fake or deceptive accounts or using accounts to get around limits, safety systems or moderation. Making a new account to get around a ban isn't allowed.