Outpost is not one big network. Every server is its own community, on its own machine, with its own accounts. That changes how joining works, so start here.
You need an invite link or a server address. Someone gives you one, or you find one in the server directory.
Open the invite link in a browser and it does the rest.
If all you have is an address, paste it into the app instead. Use the name at the top of the channel list, then Add Server.
Then register. Whether you need a code depends on the owner. Some servers are open to anyone with the address. Some want an invite code, and that code may be good once or many times.
A server nobody has claimed yet has no accounts on it at all.
It prints a one-time claim code to its own startup log. Read the log, copy the code, enter it at the Claim This Server prompt. That account becomes the owner.
The code goes to the log and never to the web page on purpose. A brand new server sitting on the internet should not hand ownership to whoever loads it first.
Standing the server up yourself? Read the self-hosting guide.
Your login works on one server. There is no Outpost account that follows you around the way a Discord one does.
In three communities means three accounts. Different name on each, if you want. Different avatar.
This is the design, not a missing feature. The self-hosting guide covers why Outpost is not federated.
Two different things, and only one of them is permanent.
Leave Server takes the server off this device. Right-click it in the switcher at the top of the channel list. Your account is untouched. Add the server back, log in, everything is where you left it.
Delete Account is permanent. It is at the bottom of user settings. Nobody can undo it afterwards, not even the owner.
Your messages stay where they are and show as Deleted User. Delete them yourself first if you want them gone. Account Security lists exactly what goes and what stays.
Owners cannot delete their own account. A server with no owner cannot be run by anyone. Shut the server down instead.
