The reason you were banned is because you kept commenting on users' talk pages, giving them unnecessary emails. You are still allowed to comment on this topic, however. While I do appreciate that you are trying to help the wiki, commenting on everyone's user pages with a welcome message can be bothersome for some users. I can discuss the addition of a welcome message with the other admins, but don't expect it to be implemented. In the meantime, feel free to talk to us here or through our Discord server when you have the chance.