Fri, 10 Apr 2026 17:02:41 +0000 https://bugs.horde.org/ticket/8219 File ics is not attached in Outlook Express or thunderbird when an event notification is configured We are using Kronolith H3 (2.3). When we send an event invitation, in Outlook express or Thunderbird it displays nothing in attachment (.ics file). Therefore, I have changed mime-type of email from 'multipart/alternative' to 'multipart/mixed' (in kronolith/lib/Kronolith.php). Attached is the fix for the issue. Mon, 27 Apr 2009 06:28:07 +0000 https://bugs.horde.org/ticket/8219#t53888 I don't see this. Event requests are rendered perfectly fine in Thunderbird w/ Sunbird extension here. Wed, 29 Apr 2009 14:27:16 +0000 https://bugs.horde.org/ticket/8219#t53915