right,

limit permission to just Group

Thanks

end of a bad dream

Resolved with this command

grant execute on sp_send_dbmail to public

I hope it is the correct way

Thanks

yes,

are the first checks that I run,

for this reason I do not know where to look for the problem

Yes,

It includes this information,

I did two tests,

with my administrator account and with service account.

Error appears with both account

execute as user: my administrator account

execut user: sql service account

Thanks

yes, this is the configuration.

I gave permission to SQL Server Agent service account.

Now the error is

The EXECUTE permission was denied on the object 'sp_send_dbmail', database 'msdb', schema 'dbo'. [SQLSTATE 42000]...