==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 0.9.9
- Deployed with iRedMail Easy or the downloadable installer? No
- Linux/BSD distribution name and version:  CentOS 7.7
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

The backup script /var/vmail/backup/backup_mysql.sh leaves behind empty folders.
Is it possible to have the script clean them up after removing the last backup file from the folder?

# du --max-depth=1  /var/vmail/backup/mysql/2019 | sort -k2,2
682572    /var/vmail/backup/mysql/2019
4             /var/vmail/backup/mysql/2019/01
4             /var/vmail/backup/mysql/2019/02
4             /var/vmail/backup/mysql/2019/03
4             /var/vmail/backup/mysql/2019/04
4             /var/vmail/backup/mysql/2019/05
4             /var/vmail/backup/mysql/2019/06
253956    /var/vmail/backup/mysql/2019/07
234640    /var/vmail/backup/mysql/2019/08
185072    /var/vmail/backup/mysql/2019/09
8876        /var/vmail/backup/mysql/2019/10
[root@nebula ~]# 

If you choose to remedy this, then I contribute this suggestion.

# if [[ $(ls -A1 /var/vmail/backup/mysql/2019/01/ | wc -l) -eq 0 ]];then echo empty; fi
empty
#

Of course "echo empty" would really be "rmdir ...."

And this would need to be done for the year-level directory too.

Thanks, Rob.