In mail I use two email accounts, a gmail for private use and an email adress that was allocated to me for use when mailing to teachers and staff.
I would like to set mail.app to automatically use my private email adress when I'm mailing to my friends and my university's email adress when mailing to my teachers etc.
I want this because now I tend to forget to change this account, using the gmail when mailing to teachers and using the universities account when mailing to friends, which can cause some problems when they reply, having emails end up in the wrong mailboxes and so forth.
Can it be done?
Currently I'm on Snow Leopard, but I will be moving to Lion soon.