diff --git a/home/program/thunderbird/default.nix b/home/program/thunderbird/default.nix
index aa8bcaa..98c6578 100644
--- a/home/program/thunderbird/default.nix
+++ b/home/program/thunderbird/default.nix
@@ -12,22 +12,31 @@
     isDefault = true;
     withExternalGnupg = true;
   };
-  settings = {
+  settings = let
+    dayEnd = 19;
+    dayStart = 10;
+    fontSize = config.module.style.font.size.application;
+    reminderMinutes = 10;
+    snoozeMinutes = 10;
+  in
+  {
     "browser.download.useDownloadDir" = true;
-    "calendar.alarms.defaultsnoozelength" = 10;
+    "calendar.alarms.defaultsnoozelength" = snoozeMinutes;
+    "calendar.alarms.eventalarmlen" = reminderMinutes;
     "calendar.alarms.onforevents" = 0;
     "calendar.alarms.onfortodos" = 0;
     "calendar.alarms.show" = true;
     "calendar.alarms.soundType" = 1;
     "calendar.alarms.soundURL" = "file://${<static/Notification.ogg>}";
+    "calendar.alarms.todoalarmlen" = reminderMinutes;
     "calendar.item.editInTab" = true;
-    "calendar.notifications.times" = "-PT10M";
+    "calendar.notifications.times" = "-PT${toString reminderMinutes}M";
     "calendar.view-minimonth.showWeekNumber" = false;
-    "calendar.view.dayendhour" = 19;
-    "calendar.view.daystarthour" = 10;
-    "font.minimum-size.x-western" = 16;
-    "font.size.monospace.x-western" = 16;
-    "font.size.variable.x-western" = 16;
+    "calendar.view.dayendhour" = dayEnd;
+    "calendar.view.daystarthour" = dayStart;
+    "font.minimum-size.x-western" = fontSize;
+    "font.size.monospace.x-western" = fontSize;
+    "font.size.variable.x-western" = fontSize;
     "mail.biff.use_system_alert" = true;
     "mailnews.start_page.enabled" = false;
     "pdfjs.enabledCache.state" = false;