Hello, im new to XenForo and i'd like to create a new User. Basically i want to create the User externally without redirecting to the built-in solution. I managed to develop this based on another Software. Now i need to convert my old script to XenForo. Actually i just need to find complementary functions, but i dont find a starting point. Im looking for these Functions: isValidUsername/Email --> Is this Username/Email allowed? (Only consising of normal characters) isAvailableUsername/Email --> Is this Username/email never used? createUser --> Just create a new user with given password, username and email sendActivationEmail --> Just giving the user the opportunity to activate himself Im still analysing XenForo's structur, but it's quite heavy for beginners to get along with.