Customizing the account creation message for each account.

At the time of the creation of the accounts, would it be possible

to add an option to send with the mail a personal message

for exemple  'this account was created on request of ...'.

As it would be able to have different messages depending on the people

it's difficult to put it in the email template.

Thank you.

PS: And if it was also possible to choose the language of the message sent.