@holvoetn wrote
just one 
[...] subject="Mikrotik Backup of $backupfile" file="$backupfile.backup" [...]
@DeDMorozzzz
Various soluctions already exist, just search.
For example:
Save RouterBOARD full backup of everything [configuration, certificates, host key, router users (no passwords), licence, user-manager, dude, other files]
http://forum.mikrotik.com/t/router-crashes-are-wiping-the-config/149189/7