Strange problem with email log

I have a problem with sending the email log.
In the same PC I have different backups configured, but only from some of them I receive the log emails, from the others I do not receive anything.
My configuration is the same for all backups, and it is this:


My version of Duplicates is, but I also tried with the last Canary without success.
Thanks in advance

Are there any log entries regarding failures sending emails?

You might want to try exporting one of the “no email” jobs to a command line then running it in a DOS prompt window with the --verbose=true parameter added. This might show you some extra info that the GUI hides.