Switch to side-by-side view

--- a/tests/mail/mail.sh
+++ b/tests/mail/mail.sh
@@ -12,6 +12,7 @@
   recollq '"Dear Corporate Administrator"'
   recollq TestTbirdWithoutEmptyLine
   recollq TestTbirdWithEmptyLine
+  recollq ZIPPEDMAILDIR_UNIQUEXXX
 ) 2> $mystderr | egrep -v '^Recoll query: ' > $mystdout
 
 diff -w ${myname}.txt $mystdout > $mydiffs 2>&1