Auto mail buisness is dependant on the auto mail buyers. This means that the auto mail buisness will see varying action throught the buisness.
1st Job -- Auto Mail Parts Deliverer -- Deliver parts to upgrade/make auto mail. This job makes 20 ryo per post.
2nd Job -- Auto Mail Designer -- After 10 deliveries, the deliverer upgrades to the designer. Makes designs of auto mail to improve the market. This job does not require a customer upgrading/getting auto mail. 40 ryo per post.
3rd Job -- Auto Mail Builder -- After 20 designs, the designer may become a builder. The builder will build the auto mail and upgrade auto mail for anyone who needs it. 50 ryo per post. After ten posts, 60 ryo per post, after thirty posts, 80 ryo per post. The builder is required to keep track of these posts, or they will be lost.