--- a/src/sampleconf/mimeview
+++ b/src/sampleconf/mimeview
@@ -103,12 +103,14 @@
image/x-ms-bmp = gwenview %f
image/x-xpmi = gwenview %f
-# Opening mail messages just does not work in general, so let's not show an
-# "open" link by default. Savvy users with a suitable config will be able
-# to set things up, and new users won't get confused
-#message/rfc822 = thunderbird -file %f
-#text/x-mail = thunderbird -file %f
-#application/x-mimehtml = thunderbird -file %f
+# Opening mail messages not always works.
+# - Thunderbird will only open a single-message file if it has an .emf
+# extension
+# - "sylpheed %f" seems to work ok as of version 3.3
+# - "kmail --view %u" works
+message/rfc822 = thunderbird -file %f
+text/x-mail = thunderbird -file %f
+application/x-mimehtml = thunderbird -file %f
text/calendar = evolution %f