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--- a/src/sampleconf/recoll.conf.in
+++ b/src/sampleconf/recoll.conf.in
@@ -274,8 +274,11 @@
 [/usr/local/info]
 localfields = rclaptg=gnuinfo
 
-# Enable thunderbird mbox format quirks where appropriate
+# Enable thunderbird mbox format quirks where appropriate, and same for
+# mozilla/seamonkey
 [~/.thunderbird]
+mhmboxquirks = tbird
+[~/.mozilla]
 mhmboxquirks = tbird
 
 # pidgin / purple directories for irc chats have names beginning with #