[TYPO3-core] Mail on install tool

[Pedro Daniel Valero Rueda]

hello, the option to send a mail from the install tool is very usefull but allways send the same text including subject(TEST SUBJECT) and content(TEST CONTENT), in my office I have multiple server and when is necessary to test the mail at least the IP from where it is outgoing is much important, exist the way to configure the content of the mail or maybe a feature in next versions?