Open manually; may be referenced by an application
★ ★ ★ ★ ☆ Common
Data file saved by Microsoft Exchange Server in conjunction with .EDB files; used by the Exchange information store, which is comprised of:
STM files store streamed native Internet content. New messages are saved to the STM file on the mail server until they are accessed by a user's mail client. When messages are accessed by a MAPI client, they are transferred to the EDB file and converted to the native Exchange format.