/upload/language/lang_english/email/user_activate.tpl

 1Subject: Reactivate your account
 2Charset: UTF-8
 3
 4Hello {USERNAME},
 5
 6Your account on "{SITENAME}" has been deactivated, most likely due to changes made to your profile. In order to reactivate your account you must click on the link below:
 7
 8{U_ACTIVATE}
 9
10{EMAIL_SIG}