1. A computer-implemented method, performed on a server system having one or more processors and memory storing one or more programs for execution by the one or more processors comprising: receiving an email message; after receiving the email message, determining a plurality of parameters for an event described in the email message, wherein when event information in the email message is at least partially unspecified, the parameters include information inferred using one or more abductive inference rules; and sending the email message, along with an embedded event creation link wherein the embedded event creation link contains event information corresponding to at least some of the determined parameters for the event.