John Maisey updated his You Are Invited (YAI) Apple Mail plug-in to version 1.1 on Friday. The new version corrects many many incompatibilities between Microsoft Exchange style meeting invites and what iCal can understand.

Specifically, version 1.1 fixes include problems with Exchange style invites from different time zones, invites that generate warnings about the recipient not being on your imei card and differences in the way event updates are handled that result in error messages in iCal.

YAI is a plug-in for Apple Mail that translates and transfers Outlook, Google Calendar, Zimbra and Exchange style meeting invitations to iCal.

"With YAI installed, Exchange style invites received in [Mac OS X] Mailis inbox are processed as they arrive and are sent to iCal, ready to be acted on. Most invites will appear in iCalis notification pane, but any invites the user sends themselves will be added as an editable event. If there are invites from before YAI was installed, these are easily transferred to iCal by selecting them in Mail and pressing Cmd-Opt-L. They will be processed in exactly the same way as newly received ones," Mr. Maisey said.

YAI 1.1 is an Apple Mail plug-in and requires Mac OS X 10.4 or later, Apple Mail, iCal, and Address Book. There is a free trial period of 14 days. It is priced at £2.00 per Mac.