config_sway/bin/waybar_mail.sh

#!/bin/bash

MAILDIR=$HOME/.mail
ACCOUNTS=(posteo gmail xkonni)

text=""
tooltip=""
total=0
for acc in ${ACCOUNTS[@]}; do
  count=$(notmuch count folder:$acc/Inbox AND tag:unread AND NOT tag:killed)
  total=$((total+count))
  tooltip+="$acc: $count"
  [ ! $acc = ${ACCOUNTS[-1]} ] && tooltip+="\n"
done

alt=$( [ $total -gt 0 ] && echo "unread" || echo "read" )
text="$total"
json="{\"text\": \"$text\", \"tooltip\": \"$tooltip\", \"class\": \"mail\", \"alt\": \"$alt\"}"
echo $json