Fri, 10 Apr 2026 17:02:25 +0000 https://bugs.horde.org/ticket/12438 Itip / invitation interoperability with Outlook Hi, I just played around with invitations a bit and noticed that Outlook does not fully recognize invitation emails sent by Horde. Outlook shows an .ics attachment. If you click on it, the usual controls to accept / decline an event are shown. Probably the attachment needs to be switched to "inline"? I'll generate an invitation with Outlook and will post it here so we can compare the message structure. Cheers, Thomas PS: I wanted to file this ticket for FRAMEWORK_5_0, but there is no queue for this right now. Though the iTip stuff didn't change much in git master. Mon, 08 Jul 2013 14:23:18 +0000 https://bugs.horde.org/ticket/12438#t79179 Example invitation email generated by Outlook. Mon, 08 Jul 2013 14:32:38 +0000 https://bugs.horde.org/ticket/12438#t79180 Even viewing the Outlook generated iTip file in Outlook shows the same behavior. Mon, 08 Jul 2013 21:17:05 +0000 https://bugs.horde.org/ticket/12438#t79187 > Even viewing the Outlook generated iTip file in Outlook shows the > same behavior. With the example data I have to open the message itself, but no .ics attachment or anything else. So the extra step is not needed. I've tested Outlook 2007 SP2, which version of Outlook did you try? Tue, 09 Jul 2013 08:12:12 +0000 https://bugs.horde.org/ticket/12438#t79191 >> Even viewing the Outlook generated iTip file in Outlook shows the >> same behavior. > > With the example data I have to open the message itself, but no .ics That's because the example data contains nothing but the itip - no mime structure - not very friendly for clients other than outlook. > attachment or anything else. So the extra step is not needed. > > I've tested Outlook 2007 SP2, which version of Outlook did you try? OL2013 Tue, 09 Jul 2013 20:16:13 +0000 https://bugs.horde.org/ticket/12438#t79195 Going to mark this not a bug since it's due to the way OL generates the meeting request - an email containing ONLY the iTip, with no other MIME structure. Sat, 13 Jul 2013 16:59:34 +0000 https://bugs.horde.org/ticket/12438#t79278 >>> Even viewing the Outlook generated iTip file in Outlook shows the >>> same behavior. >> >> With the example data I have to open the message itself, but no .ics > > That's because the example data contains nothing but the itip - no > mime structure - not very friendly for clients other than outlook. may be we could do both? Provide the iTip stuff in the body and as attachment. >> attachment or anything else. So the extra step is not needed. >> >> I've tested Outlook 2007 SP2, which version of Outlook did you try? > > OL2013 It could be that OL2013 behaves differently than 2007 in this regard. I'm going to test it soonish. Mon, 15 Jul 2013 07:07:23 +0000 https://bugs.horde.org/ticket/12438#t79286 >>>> Even viewing the Outlook generated iTip file in Outlook shows the >>>> same behavior. >>> >>> With the example data I have to open the message itself, but no .ics >> >> That's because the example data contains nothing but the itip - no >> mime structure - not very friendly for clients other than outlook. > > may be we could do both? Provide the iTip stuff in the body and as > attachment. By definition that is impossible. The entire message in the example data is a single MIME part of type: Content-Type: text/calendar; method=REQUEST; charset="UTF-8" Adding an attachment would mean the message would no longer contain a single MIME part, but would then becore a MULTIPART message. Mon, 15 Jul 2013 15:01:35 +0000 https://bugs.horde.org/ticket/12438#t79296 >>>> Even viewing the Outlook generated iTip file in Outlook shows the >>>> same behavior. >>> >>> With the example data I have to open the message itself, but no .ics >> >> That's because the example data contains nothing but the itip - no >> mime structure - not very friendly for clients other than outlook. > > may be we could do both? Provide the iTip stuff in the body and as > attachment. That's exactly what we already do. The current MIME structure has been tested to be the *only* structure that works in all of the tested clients. Mon, 15 Jul 2013 17:52:53 +0000 https://bugs.horde.org/ticket/12438#t79305