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 for a user; 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; sending the email message, along with an embedded event creation link, to a computer associated with the user, wherein the embedded event creation link is composed by the server, after the server receives the email message, so as to contain event information corresponding to at least some of the determined parameters for the event, wherein parameters contained in the embedded event creation link include at least one date or time parameter and at least one parameter other than a date or time parameter of the event; and in response to activation of the embedded event creation link, sending an electronic calendar entry form with multiple fields to the computer associated with the user, wherein a plurality of the multiple fields contain event information from the embedded event creation link.