listen = 127.0.0.1
# mail_location = mbox:~/mail:INBOX=/var/mail/%u # Comment this and add next:
mail_location = maildir:~/Maildir

sudo apt install s3fs
sudo echo "s3fs#mailbox-konkove /home/kes/Maildir/new fuse _netdev,allow_other,profile=mail,uid=1000,gid=1000,use_cache=/tmp/S3,defaults,noatime,endpoint=eu-west-1 0 0" >> /etc/fstab