Mo. Rev. Stat. § 506.520: Personal judgment authorized — default judgment, when.

1. When jurisdiction over a person, firm, or corporation who is outside this state is acquired in accordance with the provisions of sections 506.500 and 506.510, the court shall have the power to render a personal judgment against such person, firm, or corporation.

2. No default judgment shall be entered until the expiration of at least thirty days after service of process. A default judgment rendered on service of process provided by sections 506.500 to 506.520 may be set aside only on a showing which would be timely and sufficient to set aside a default judgment rendered on ordinary service of process within this state.