I have the following code to send out email notifications. The view can vary for each call to signup_confirmation, so I''m setting template_root on each call in order to do that. It works for a while, but after a few days it will start using a value of signup_path that was used in a previous call. In other words, Notifier.template_root signup path does not actually set Notifier.template_root to the value of signup_path. Instead it seems to be setting template_root to the view that was most recently modified. For example, lets say signup_confirmation has been called 50 times with 5 different values for signup_path. Then all of the sudden it breaks, displaying the wrong view. Then from that point on, the view that it displays is whatever view has the most recent file modification date. Restarting the application fixes the problem. Also, this is running under scgi, and development versus production mode doesn''t seem to make any difference. class Notifier < ActionMailer::Base def signup_confirmation(merchant,affiliate,password,login_url,signup_path) Notifier.template_root = signup_path # Email header info MUST be added here @recipients = affiliate.email,merchant.email if merchant.signup_confirmation_from.empty? @from = merchant.email else @from = merchant.signup_confirmation_from end if merchant.signup_confirmation_subject.empty? @subject = "Welcome to #{merchant.name}" else @subject = merchant.signup_confirmation_subject end if merchant.signup_confirmation_ctype.empty? @content_type = "text/html" else @content_type = merchant.signup_confirmation_ctype end # Email body substitutions go here @body["template_root"] = Notifier.template_root @body["signup_path"] =signup_path @body["merchant_name"] = merchant.name @body["merchant_support_email"] = merchant.signup_confirmation_from @body["name"] = affiliate.name @body["email"] = affiliate.email @body["address1"] = affiliate.address1 @body["address2"] = affiliate.address2 @body["city"] = affiliate.city @body["state"] = affiliate.state @body["zip"] = affiliate.zip @body["country"] = affiliate.country @body["phone"] = affiliate.phone @body["fax"] = affiliate.fax @body["username"] = affiliate.username @body["password"] = password @body["login_url"] = login_url end end