E-Mail save the configuration

hi i saw the forum for the first time today …

If you want to save the configuration, an e-mail will be sent to the interested party once to me. where is the content of the message defined, because at the moment there is only the link to the configuration. and secondly where we set the error message for exceeding / falling below the values ??in the text option. at the moment it is still in english i would like to have it in german.