If you are in jail, the chances are, you did something wrong. PM a mod if you see any on, and try to talk to them if you made a mistake or broke a rule.
What Pink Mando said, you can also press tab and see if any moderators are on, then you can /msg them.
If you are in jail, the only way you can be released is by a moderator. Press tab and see if any moderators are on, then just type in chat. The moderators will see your chat if they are not AFK and will help you get out.
