waybar: use default config for most hosts, add mail status

bin/mail

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+MAILDIR=$HOME/.mail
+ACCOUNTS=(posteo gmail xkonni)
+
+text=""
+total=0
+for acc in ${ACCOUNTS[@]}; do
+  count=$(notmuch count folder:$acc/Inbox AND tag:unread AND NOT tag:killed)
+  total=$((total+count))
+  text+="$count"
+  [ ! $acc = ${ACCOUNTS[-1]} ] && text+=", "
+done
+
+alt=$( [ $total -gt 0 ] && echo "unread" || echo "read" )
+text="$total ($text)"
+json="{\"text\": \"$text\", \"class\": \"mail\", \"alt\": \"$alt\"}"
+echo $json