First for the backup, all mailboxes are part of the backup and thus can be restored. They are part of the platform backup or in Cloudron terms "box" backups.
For the role, there is currently no specific email role and the user manager role also does not apply here. So far we haven't seen much requests regarding those roles, so there is a lot to be improved I think. Also while reading your question, it may actually make a lot of sense to allow the usermanager role to also manage mail related things. Not sure yet, feedback welcome.
To answer your immediate question, the only way to do this is to grant admin rights for this user at the moment.
@imc67 in the next release, we will suppress those notifications. it seems to not add much value. in any case, the solution is just to wait since cloudron will try again later. it's not a Cloudron issue, the LE service just goes up/down by nature.
@girish I got loads of disk space left. Im unsure why. The only thing i can think of is another one of my VM's were undergoing a checkpoint merge in hyper-V I wonder if that affected the PostGreSql database temporarily since they share the same storage space.
Generally, I am wary of putting this information for general use (and even in docs) because many things can go wrong . So, please, if you care about the data, don't hesitate to contact us on support@ . We help regardless of the subscription plan.
@nebulon@girish@d19dotca Thank's a lot @d19dotca ! For me is a little bit complex append that command in cronjob and I don't know if Cloudron make some integrity test at boot time to try to check if turn is on or off.
Another solution is to use VPS provided firewall to lock that doors... But as @nebulon wrote, one improvement could be add rate-limiting and/or start that services on demand.