Script: inbox-imap-shell
A script that shows if there are unread mails in your IMAP inbox.
For Gmail, you must allow less secure apps.
This script actually use IMAPs. curl can also handle unencrypted IMAP. You only need to change the protocol in the command.
Dependencies
curl
Module
[module/inbox-imap-shell]
type = custom/script
exec = ~/polybar-scripts/inbox-imap-shell.sh
interval = 60