Added error handling to mail syncing notification on polybar

offlineimap/.config/systemd/user/offlineimap-oneshot.service.d/override.conf

@@ -1,4 +1,4 @@
 [Service]
 Environment=DISPLAY=:0
 ExecStartPre=polybar-msg hook mail 2
-ExecStop=polybar-msg hook mail 1
+ExecStopPost=/bin/sh -c 'if [ "$$EXIT_STATUS" = 0 ]; then polybar-msg hook mail 1; else polybar-msg hook mail 3; fi'

polybar/.config/polybar/config

@@ -140,6 +140,7 @@ format-prefix = " "
 format-prefix-foreground = ${colors.foreground-alt}
 hook-0 = /home/micah/.config/polybar/scripts/mail
 hook-1 = echo -e '\u21bb'
+hook-2 = echo -e '\ue0ae'
 initial = 1
 
 [module/backup]