From e0747c12ee9d33bdc78f24f706b3dd637178564d Mon Sep 17 00:00:00 2001
From: Linus Rath <139418639+rathlinus@users.noreply.github.com>
Date: Sun, 28 Jun 2026 20:27:23 +0200
Subject: [PATCH] fix: send calendar invites by setting
 organizerCalendarAddress

---
 components/calendar/event-modal.tsx | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/components/calendar/event-modal.tsx b/components/calendar/event-modal.tsx
index 609613f1..4c2b3f28 100644
--- a/components/calendar/event-modal.tsx
+++ b/components/calendar/event-modal.tsx
@@ -523,9 +523,14 @@ export function EventModal({
         effectiveAttendees
       ) as Record<string, CalendarParticipant>;
       data.replyTo = { imip: `mailto:${organizerEmail}` };
+      // Stalwart (calcard) derives the iCalendar ORGANIZER property solely from
+      // organizerCalendarAddress; without it no ORGANIZER is emitted and iTIP
+      // scheduling is silently skipped (NoSchedulingInfo), so no invites are sent.
+      data.organizerCalendarAddress = `mailto:${organizerEmail}`;
     } else if (effectiveAttendees.length === 0 && event?.participants) {
       data.participants = null;
       data.replyTo = null;
+      data.organizerCalendarAddress = null;
     }
 
     const shouldSendScheduling = effectiveAttendees.length > 0 && sendInvitations;